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
Example solution: B
Example 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.

Problem: Article: Margaret Bourke-White was one of the leading news reporters of the 20th century. But she did not write news. She told her stories with a camera. Margaret Bourke-White began her career as an industrial photographer in the early 1930s. In 1936, she accepted the American publisher Henry Luce's invitation and went to his magazine, called Life, and later another magazine called Fortune. In the 1930s, Margaret Bourke-White met the American writer Erskine Caldwell. They decided to produce a book about poor country people of the South. They traveled through eight states. Their book, You Have Seen Their Faces, was published in 1937. It was a great success. In 1938, some countries in Europe were close to war. Margaret Bourke-White and Caldwell went there to report on these events. The next year they got married. During the World War Two, she became an official photographer with the United States Army. Her photographs were to be used jointly by the military and by Life magazine. She was the first woman to be permitted to work at the front during World War Two. After the war, she went to India and took a famous photograph of Mohandas Gandhi called "Gandhi at His Spinning Wheel". She was the last person to photograph Gandhi before he was murdered in 1948. Often, Margaret Bourke-White was not satisfied with what she had done. She would look at her pictures and see something she had failed to do, or something she had not done right. Reaching perfection was not easy. Many things got in the way of her work. She said, "There is only one moment when a picture is there. And a moment later, it is gone forever. My memory is full of those pictures that were lost."
Question: Margaret Bourke-White _ .
Options: (A) did very well in writing news (B) reported news by taking pictures (C) focused on industrial news as a reporter (D) began her career by working for Fortune
Solution: B