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: According to a study by SallieMae, 84 percent of undergraduate students have credit cards, and by the time they are seniors, they have accumulated US $ 4,100 in debt, on top of whatever student loans they may have taken out. Credit cards are the most convenient form of payment, and they are aggressively marketed to college students.Reportedly, a typical college student carries 4.6 credit cards and US $ 3,173 in credit card debt. Credit cards seem to be a fact of life, not just student life. In the long term, using a credit card properly and paying off the balance can help establish a card history and increase your credit score, which will _ when you need an important loan, for a house or car, for example.Your credit score can affect even unrelated things like insurance rates.Credit cards also offer more protection for users than debit cards .Under federal law, the credit card holder is only responsible for the first US $ 50in fraudulent purchases in cases of theft or loss.However, debit card users are responsible for the first US $ 500. SallieMae found some good news in the fact that two thirds of students had discussed credit issues with their parents, but 84 percent said they needed more information.Those who didn't get any guidance were more likely to be surprised when they found out how much they owed. While credit cards offer the easiest access to money, they make it easy to live outside your means.Less than a fifth of students surveyed paid off their balance every month, and carrying a balance brings finance charges, sometimes at a very high interest rates. SallieMae found that almost 40 percent of students chose their first credit card based on direct mail, which is probably why students get credit card offers in the mail. But when the credit card offers flow in, be sure that you read the fine print.Offers of low or no interest rates can disappear, leaving you a debt that climbs beyond your ability to pay it off.
Question: According to SallieMae, what is the possible reason why students get so many credit card offers in the mail?
Options: (A) Many students' first credit card is based on direct mail. (B) it costs the banks little to mail out credit cards. (C) Students don't like to go to the bank to open a credit card account. (D) Banks have no other way to let students use their credit cards.
Solution:
A