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: During my visit to my parents, I decided to explore their attic . They have lived in their home in the mountains since 1953, so investigating the attic was a trip down memory lane for me. I climbed the unstable ladder to the dusty, cold third floor. I looked around and noticed a very old basket in the corner, in which I found letters piled high, faded and dirty-untouched there. As I opened each letter, I discovered a new and previously unrevealed page of my parents' lives. My father served in the Army. He wrote about his daily experiences with civilians, German POWs, baths and more. I was drawn to these letters. Each of my mother's letters was sealed with her 1944 lipstick kiss. Daddy wrote that he sealed his return letters by rekissing her lipstick kiss. Oh, how they missed each other! I finished reading six months of the letters and discovered there were at least eleven months missing. Where could they be? Just six weeks after my visit, Daddy became very ill and was hospitalized. He was scheduled for kidney dialysis when I decided to fly to visit him. We discussed the letters. He told me how much receiving those lipstick-kissed letters had meant to him when he had been so far from home. As I left, the thought raced through my mind that tomorrow was Valentine's Day. But I quickly dismissed this thought. My father wasn't in any kind of shape to shop for a valentine. My parents had been married for fifty-six years. My mother would understand that her valentine would just have to be skipped this year. Later that evening, Mother and I revisited the attic in search of the lost letters. Toward the bottom, we discovered an unmarked gold cardboard box. Yes! Here were the long-lost letters! I began looking through them. Lying separate, on top of the letters was the valentine card my father had sent Mother in 1944! The next day,Mother and I visited Daddy in the hospital. I joked with him, saying softly, "Today is Valentine's Day, and I know you have been a little busy lately, but I've got something you covered."I handed him the card. He carefully opened the card, and when he recognized it, his eyes filled with tears. There was nothing lacking that Valentine's Day after all. My father, in a voice shaking with emotion, read the loving message he'd sent to my mother fifty-six years earlier. And this time, he could read it to her in person.
Question: What information do we get from the passage?
Options: (A) My father had been in the army for just one year. (B) I revisited the attic, hoping to find some gold boxes. (C) My father's state of health was nothing serious six weeks after my first visit. (D) The Valentine's card to Mum sent by my father in 1944 was a real treasure to them.
Solution:
D