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.

Ex Input:
Article: Supply and demand is perhaps one of the most basic concepts of economics and it is the backbone of a market economy. Demand refers to how much of a product or service is desired by buyers. The quantity demanded is the amount of a product people are willing to buy at a certain price; the relationship between price and quantity demanded is known as the demand relationship. Supply represents how much the market can offer. The quantity supplied refers to the amount of a certain goods producers are willing to supply when receiving a certain price. The relationship between price and how much of a goods or service is supplied to the market is known as the supply relationship. Price, therefore, is a reflection of supply and demand.    The law of demand states that, if all other factors remain equal, the higher the price of a product, the fewer people will demand that product. The amount of goods that buyers purchase at a higher price is less as the price of a product goes up, so does the opportunity cost of buying that product.    Like the law of demand, the law of supply shows the quantities that will be sold at a certain price. But unlike the law of demand, the supply relationship shows an upward slope. This means that the higher the price, the higher the quantity supplied. Producers supply more at a higher price because selling a higher quantity at a higher price increases the whole income.    Now that we know the laws of supply and demand, let's turn to an example to show how supply and demand affect price.    Imagine that a CD of your favorite band is sold for $20. Because the record company's previous analysis showed that consumers will not demand CDs at a price higher than $20, only ten CDs were sold because the opportunity cost is too high for suppliers to produce more. If, however, the ten CDs are demanded by 20 people, the price will then rise. As a result, the rise in price should cause more CDs to be supplied as the supply relationship shows that the higher the price, the higher the quantity supplied. If, however, there are 30 CDs produced and demand is still at 20, the price will not be pushed up because the supply is more than the demand. 
 Question: We know from the passage that changes in the prices of product cause changes in   _  . 
 Options: (A) income and expense (B) invention and production (C) market and society (D) supply and demand

Ex Output:
D


Ex Input:
Article: A college student has turned the act of telling someone off into an art form. Lama Ali, who attend school in Virginia, had three final assignments due on the same day for her fashion drawing class. Exhausted after working on painting for seven hours straight, the 20-year-old decided to include a message in American Sign Language to her professor: When your drawing teacher assigns 3 finals so you secretly write "you got me fucked up" in sign language on your final piece. ----Shawty Arabia(@LemAli23) December 7,2016 "You got me fucked up," a bunch of hands in the painting spell out in ASL, in a form of sign known as finger spelling , which uses signs for each letter, rather than for the words themselves. "Honestly the idea just came to me while I was finishing up the piece," Ali toldThe Huffington Post." I was looking at it and thought, 'This could really use something else'. And then the idea struck me: Why not secretly express how I was feeling while struggling at the library at 4 a. m.?" Once the fashion design major had finished her masterpiece, she posted it to Twitter on Dec. 7, where it has received over 113,000likes and 48,000 retweets  . Ali, who does not know ASL, toldHuffPostshe taught herself a little bit just for this particular assignment. "You know it's bad when you have to learn a whole other language to express how done you are," she said. "I remembered seeing a post on Tumblr long ago with a similar phrase by the post, she decided to look up the letters in ASL to spell out the message. Someone on Twitter even did the good work of circling them in the painting. Ali toldHuffPostthat when she finally presented the piece to her professor in her class, he absolutely loved it. "Most of my friends in class actually knew about the secret message, so I was really surprised when no one laughed or blew my cover during critique ." She also admits that her professor still doesn't know about the message, despite her post getting so much attention. 
 Question: Which of the following is closest in meaning to "You got me fucked up"? 
 Options: (A) I was greatly astonished. (B) You really worn me out. (C) I felt much appreciated. (D) You left me impressed.

Ex Output:
B


Ex Input:
Article: Color is very important in our daily life. It can influence our choice of purchase when we go shopping and can also affect the way we look and feel. A person can be naturally attracted to one particular color1 while finding another color1 repulsive. The influence of color1 on human emotions and feelings is very powerful and designers, advertisers, artists and even doctors use  _ in their professions for different purposes. Every day, without even thinking about it, we use color1 to communicate our feelings. For example, the color1 we choose to wear is one way of expressing ourselves. It says something about the person, how he or she feels, and how he or she wants others to feel about the wearer. In other words, color1 talks. A person who wants to appear stylish and mature will usually wear dark color1s or black. A person who wishes to appear youngish, pure and innocent dresses in white, like the choice of a bride's wedding gown. Also clothed in white are doctors, dentists, nurses and hospital in-patients as the color1 expresses comfort, cleanliness and professionalism. Brown, blue or grey clothes are the usual color1s worn by office workers so as not to draw unnecessary attention to them. They are, in a way, conveying the message that they want to be noticed for their work, not their appearance. People who wear bright, strong color1s like to be attractive and these color1s are particularly popular with actresses, singers and party goers. In the past, common people were not allowed to wear certain color1s. In Thailand, for example, only kings, queens and members of the royal family could wear purple while in ancient China, yellow was the color1 reserved for the emperor and the empress. Nowadays, people can wear whatever color1 they like or as they think appropriate. 
 Question: How does color1 affect a product? 
 Options: (A) It describes the product. (B) It helps the product designer to express himself. (C) It may put the purchaser in a spending mood. (D) It is able to influence the consumers' choice of purchase.

Ex Output:

D


