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.
One 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
Solution is here: B
Explanation: 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.

Now, solve this: Article: On the whole, it's not something we parents shout about, but one in four of us does it. Hiring private tutors for our children is now widespread. "It's expensive, but worth it," says Ashan Sabri, whose daughter Zarreen, is having tuition in biology and chemistry in preparation for A-levels this summer. "My husband and I tried to tutor her at home, but we found all our knowledge was out of date and we were only confusing Zarreen. We also tried a group revision course but all the children were sitting in a room for different kinds of exams. On the whole, we think one-to-one tuition works best." The real reason is: does tutoring do any good? "It's not the _ ," says Professor Judith Ireson, author of a 2005 Institute of Education report on the subject. "It's still up to the child to do the learning. If he or she isn't interested, sending them to a private tutor won't do any good. However, we did find that students who had private tuition in mathematics during the two years before GCSE achieved on average just under half a grade higher than students who did not have a tutor." In which case, surely it's time to break open the champagne? Not necessarily, says Elaine Tyrrell, head of The Rowans School, Wimbledon, a preparation school which regularly gets children into the best private schools. "While we recommend private tutoring for a few children whose first language isn't English, we don't encourage it for the others. With the level of education they get here, children really ought to be able to pass the entrance exams without any extra teaching. And our worry is that they might just get used to getting help from last-minute tutoring, but, once they actually get to that school, they won't be able to cope." But Mylene Curtis, owner of Fleet Tutors, one of the biggest tutoring agencies in the country, holds a different view. "In some respects, the hurdles children have to leap in order to get into these schools are set at a higher level than the reality," says Curtis. "We often find that, once a child has got into a school, the standard of work isn't as high as was feared. The trick is to do well enough in the exam to win a place." 
 Question: What does Ashan Sabri think of the group revision course? 
 Options: (A) It's expensive but worthwhile because it works the best. (B) It confuses students because the knowledge taught in it is out of date. (C) It isn't effective because it doesn't focus on specific exams. (D) It is effective because it doesn't focus on specific exams.
Solution:
C