Given the task definition, example input & output, solve the new input case.
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.
Example: Article: Homework can put you in a bad mood , and that might actually be a good thing. Researchers from the University of Plymouth in England doubted whether mood might affect the way kids learn. To find out the answer, they did two experiments with children. The first experiment tested 30 kids. Someshapes were hidden inside a different, larger picture. The kids had to find the small shapes while sitting in a room with either cheerful or sad music playing in the background. To test their mood, the scientists asked the kids to point to one of five faces, from happy to sad. Children who listened to cheerful music tended to point to the smiley faces while the others pointed to the unhappy ones. The researchers found that sad kids took at least a second less to find the small shapes. They also found an average of three or four more shapes. In the second experiment, 61 children watched one of two scenes from a film. One scene was happy, and the other was sad. Just like in the first experiment, kids who saw the sad scene acted better compared to the others. The researchers guessed that feeling down makes people more likely to focus on a problem or difficult situation. Not all scientists agree with them, however. Other studies argued that maybe, that cheerful music in the first experiment distracted kids from finding shapes. While scientists work on finding out the answers, it still might be wise to choose when to do your tasks according to your mood. After eating a delicious ice cream, for example, write an essay. 
 Question: Researchers did experiments on kids in order to find out _ . 
 Options: (A) how they really feel when they are learning (B) whether mood affects their learning ability (C) what methods are easy for kids to learn (D) the relationship between sadness and happiness
Output: B
It is clearly mentioned in the article that to the check effect of mood on children is the main purpose of the experiment. So, B is the correct answer.

New input case for you: Article: How good are U.S. drivers? The CBS TV "National Drivers Test" showed that many U.S. drivers have a lot to learn. Here's why: CBS picked 1,799 samples  to take the test in TV studios in New York, Philadelphia, Chicago, and Los Angeles. More than two out of five of the drivers failed the test. And the average score was the lowest passing mark-51 points out of a possible 80. Chicago drivers did best with an average of 53 points. Los Angeles drivers came next with 52 points. New York and Philadephia drivers tied  with 50 points-a failing score. Drivers with 50 points or less were rated  "poorly informed" by the judges. Here are some of the test results: (1) Are men better informed drivers than women?-Yes. Men averaged 52 points. Women got average of 49. (2) Are older drivers better informed than younger drivers?-No. Drivers under 26 averaged 52 points. Drivers from 27 to 45 averaged 51. Driver over 45 failed with 48 points on average. (3) Does education make a difference?-Yes. College graduates averaged 52 points. High school graduates averaged 50. Those without high school diplomas  got 48. And people who had taken driver education courses scored an average of 53 points-three more than those who hadn't. (4) Does driving experience make a difference?-Yes. Drivers with three or more years' experience averaged 51 points. Drivers with less experience averaged 49. Here are some surprising facts brought out by the test: (1)More than one out of three drivers did not know that a blinking  red light means a full stop. (2)Three out of ten drivers did not know that an octagonal (eight-sided) sign means stop. (3)More than two of three drivers did not know what to do when being "tailgated"(,) The answer: slow down, drive to the right, and let the driver behind pass. The results of the test were turned over to the National Safety Council. They will help future safety planning. 
 Question: The author's purpose is to   _  . 
 Options: (A) prove that men are better drivers than women (B) give you safe driving tips (C) tell you the results of a national drivers test. (D) urge you to get an education.
Output:
C