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 input: 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 output: 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.
Q: Article: I was living a life in my screen and hardly noticed what was around me. So when my friends invited me to go camping for a long weekend without the cell service, I thought this was exactly what I needed. Here's how keeping away from my phone for 48 hours changed me. I realized my bedtime routine was usually centered on one thing: my phone. Right before I went to sleep, I browsed through news websites and checked my emails. When I woke up in the middle of the night, I did the same thing. The problem with this was I felt anxious every night. I felt free without my phone at that weekend camp. I felt asleep listening to the sound of crickets. When I had my phone, I was always checking the time and thinking of future plans. My thought was: "Who's going to text me now? What will I do next?" Without my phone, I truly _ what I was doing in the moment, sitting by the river, riding a bike, or singing the old songs. There was no need to rush through any of it. I listened to what my body wanted instead of what my phone was telling me to do. You know that moment when you're hanging out with a group of people and no one has anything to say? The typical response: Everyone immediately pulls out their phones. So what did we do without a phone to avoid embarrassing silences? We actually talked to each other. Instead of burying our faces in our screens, we looked one another in the eye, had a moment of pure human connection and then continued talking. And you know what? People actually listened. So, now what? Now I'm back to the real world.
Question: When the author's friends invited him to go camping, he _ .
Options: (A) didn't really want to go (B) wanted to take his cellphone (C) didn't think life would be any different (D) considered it a good chance to escape cellphone
A:
D