In this task, you're given an article, a question which often contains a blank and four options (associated with "A", "B", "C", "D"). Your task is to find the correct answer (from the given options) for the question from the given article and return one of the options from "A", "B", "C", and "D". Do not generate anything else apart from one of the following characters: "A", "B", "C", "D". There is only one correct answer for each question.

Article: These days, if you still think the cellphone is just for talking, you will get laughed at. Yes, it's true, voice-only handsets have become out of date. Today's do-it-all mobiles have a lot in common with the computer. The only difference may be that they fit in your pocket and you pay by the minutes to use them. Some of the things a cellphone can do for you will be available this year:          Surf at speed          Cellpones that let you use the Web have been around for years. So, what's new? Well, faster third-generation(3G) net works let you surf at anywhere. This then allows a carrier to send video, music, and games to your phone. Possible choices are from LG Electronic VX 8000 and Motorola V 1150.          Listen as you go          The problem with most cellphone MP3 players is that they hold only a handful of songs. But, that's about to change. Sony Ericsson's new W800i can hold around 150 songs in its 500 MB memory. And Sumsung's SPH-V5400 even comes with a 1.5 GB hard drive. Mobile phones may eventually replace mini-MP3 players, especially for teens.          Say cheese          Camera cellphones are not new either. But, most of them have limitations: around 1-megapixel . But new technology has made 2-megapixel units more common and 3-megapixel units are showing up soon. Some 2-megapixel models, like Sony Ericsson's K750i, offer limited zoom and focus controls. Others, like LG's recent MMA7110, can even capture 30 minutes of full- motion video.          Portable TV          You say you like "watching TV"? That's what Sumsung MM-A700 wants to give you. The new model lets users watch popular TV programs--for a fee. Other choices are Nokia's 6620, Sanyo's MM 7400 and NEC's N940.The NEC model lets you watch public TV--no fee.          The above are just a handful of what you will see in the coming months. Further down the road, your mobile phone may play a host of other roles, such as mobile credit card, position locator... So what is there that a cellphone can't do? 
 Question: Which of the following models should you choose to listen to the music? 
 Options: (A) Sumsung's SPH-V5400 and Nokia's 6620 (B) Sony Ericsson's W800i and Sumsung's SPH-V5400 (C) Sony Ericsson's W800i and NEC's N940 (D) Sanyo's MM7400 and NEC's N940
B

Article: Sensing phantom phone vibrations  is a strangely common experience. Around 80% of us have imagined a phone vibrating in our pockets when it's actually completely still. Almost 30% of us have also heard non-existent ringing. Are these signs of madness caused by digital culture? Not at all. In fact, phantom vibrations and ringing indicate a fundamental principle in psychology. Psychologists use a concept called Signal Detection Theory to guide their thinking about the problem of perceptual  judgments. Working through the example of phone vibrations, we can see how this theory explains why they are a common and unavoidable part of healthy mental function. When your phone is in your pocket, the world is in one of two possible states: the phone is either ringing or not. You also have two possible states of mind: the judgment that the phone is ringing, or the judgment that it isn't. Obviously you'd like to match these states in the correct way. True vibrations should go with "it's ringing", and no vibrations should go with "it's not ringing". Signal detection theory calls these faithful matches a "hit" and a "correct rejection" But there are two other possible combinations: you could mismatch true vibrations with "it's not ringing" (a "miss"); or mismatch the absence of vibrations with "it's ringing" (a "false alarm"). This second kind of mismatch is what's going on when you imagine a phantom phone vibration. What does that mean in terms of your phone? We can assume that people like to notice when their phone is ringing, and that most people hate missing a call. This means their perceptual systems have adjusted their bias  to a level that makes misses unlikely. The unavoidable cost is a raised likelihood of false alarms of phantom phone vibrations. The trade-off between false alarms and misses also explains why we all have to put up with fire alarms going off when there isn't a fire. It isn't that the alarms are badly designed, but rather that they are very sensible to smoke and heat and biased to avoid missing a real fire at all costs. The outcome is a rise in the number of false alarms. These are inconvenient, but nowhere near as inconvenient as burning to death in your bed or office. The alarms are designed to err on the side of caution. 
 Question: The writer tries to explain phantom phone vibrations_. 
 Options: (A) by analyzing some facts (B) by giving some examples (C) from the angle of biology (D) from the angle of psychology
D

Article: In a moment of personal crisis, how much help can you expect from a New York taxi driver? I began studying this question and answers are interesting. One morning, I got into three different taxis and announced,"Well,it's my first day back in New York in seven years.I've been in prison."Not a single driver replied,so I tried again."Yeah,I shot a man in Reno."I explained, hoping the driver would ask me why, but nobody asked.The only response came from a Ghanaian driver,"Reno? That is in Nevada?" Taxi drivers were uniform sympathetic when I said I'd just been fired."This is America,"a Haitian driver said."One door is closed.Another is open."He argued against my plan to burn down my boss' s house.A Pakistani driver even turned down a chance to profit from my loss of hope;he refused to take me to the middle of the George Washington Bridge--a $20 trip."Why do you want to go there? Go home and relax.Don't worry.Take a new job." One very hot weekday in July, while wearing a red ski mask and holding a stuffed pillowcase with the word "BANK" on it, I tried calling a taxi five times outside different banks.The driver picked me up every time.My ride with a Haitian driver was typical of the superb assistance I received. "Let's go across the park," I said."I just robbed the bank there.I got $25,000." "$25,000?" he asked. "Yeah,you think it was wrong to take it?" "No, man.I work 8 hours and I don't make almost $70.If I can do that,I will do it too." As we approached 86th and Lexington, I pointed to the Chemical Bank. "Hey,there is another bank,"I said,"Could you wait here a minute while I go inside?" "No,I can't wait.Pay me now." His unwillingness may have had something to do with money--taxi drivers think the rate for waiting time is too low--but I think he wanted me to learn that even a bank robber can't expect unconditional support. 
 Question: From the Ghanaian driver's response, we can infer that  _  . 
 Options: (A) he was afraid of the author (B) he thought the author was crazy (C) he looked down upon the author (D) he was indifferent to the killing

D

