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.

Input: Consider Input: Article: Have you ever been talking to somebody at the party? Do you focus entirely on the person you are speaking with or does your attention keep jumping around the room to all the other people there? Generally speaking, if the person is someone you really want to talk to you will focus on them. Most other people will only get about half of your attention. You may think that this is OK, because if you don't really want to talk to them then what does it matter if you don't give them your full attention? Consider two things. First, you may just not realize the importance of that conversation. If you are at a networking meeting and you hope to meet the CEO of Company X but you end up talking to someone who has a low-level job at a different company, then you may let your attention wander as you speak to him. But maybe you don't realize that this person has already met the CEO and could introduce you. Do you think he will do that if he feels you don't really care about speaking to him? This doesn't mean you need to spend the entire time talking to him. Five or ten minutes of real attentive conversation can be worth 30 minutes to an hour of partial attention interaction. Second, whether you want to speak to someone changes based on the situation. You love your spouse , but if he or she tries to talk to you while you are watching something you like on TV, where is your attention going? Make your own decision, but if you want them to feel valued, give them your 100% attention. "The nice thing is that in many cases you can give them your attention for a few minutes and then return to what you were doing. You miss very little, they feel valued, and all is good."
Question: Generally speaking you would like to focus on someone _ .
Options: (A) who is friendly to you (B) who is active at the party (C) who you want to talk to (D) who you are speaking with

Output: C

Input: Consider Input: Article: Social media is one of the fastest-growing industries in today's world. A study conducted by the US think tank Pew Research Center showed that 92 percent of teenagers go online daily. The wide spread of social media has changed nearly all parts of teenagers' lives. Changing relationships High school student Elly Cooper from Illinois said social media often reduces face-to-face communication. "It makes in-person relationships harder because people give attention to their phones instead of their boyfriends or girlfriends," Cooper said. There's also a greater possibility of things getting lost in translation over social media. "If half of your relationship is over social media, you don't really know how the other person is reacting," Sienna Schulte, a junior student from Illinois, said. Yet, some people believe social media has made it easier to start relationships with anyone from anywhere. Beth Kaplan from Illinois met her long-distance friend through social media. He currently lives in Scotland, but they're still able to frequently communicate with one another. "I can feel close to someone that I'm talking to via FaceTime," Kaplan said. Wanting to be "liked" The rise of social media has changed the way teenagers see themselves. The 19-year-old Essena O'Neill announced on the social networking service Instagram that she was quitting social media because it made her obsessed with appearing perfect online. Negative comments also can do great damage to a teenager's self-esteem . In particular, anonymous social media apps such as Yik Yak may provide opportunities for cyber bullying . The app allows users within 5 miles (8 km) to create and add comments to everything. Teenagers who get negative comments on these sites can't help but feel hurt. Opening new doors However, Armin Korsos, a student from Illinois, takes advantage of the comments he receives over social media to improve his videos on the social networking site Youtube. "Social media can help people show themselves and their talents to the world in a way that was never possible before," Korsos said. But Korsos recognizes that social media has become a distraction . "Social media, though it helps people connect with their friends and stay updated, is not all necessary."
Question: What is the article mainly about?
Options: (A) The major problems with social media. (B) The impact of social media on teenagers. (C) How teenagers benefit from social media. (D) Why social media appeals so much to teenagers.

Output: B

Input: Consider Input: Article: Have you ever felt annoyed when left talking to yourself after your mobile phone battery runs out in the middle of a call? If yes, then here comes some good news. Scientists are now perfecting a way to recharge electrical equipment while on the move. Researchers from theprefix = st1 /Netherlands,FranceandPortugalannounced last week that they have developed very thin solar panels that can be put on clothes. They can also be added to furniture and rooftops. They change light from the sun into electricity. In about three years, you'll be able to wear a jacket that will recharge your phone as you walk. For camping fans, the development could lead to a tent which charges batteries all day so you can have light or music at night. The basic technology of wearable solar panels is the same as that used for traditional solar panels. Pairs of sheets of semi-conducting silicon are linked together to form the panel. But scientists made them much thinner by using different silicon. At one micrometre, they are of the same thickness as photographic film. "This technology will make it easier for people to use clean energy sources," said a physicist in theNetherlandswho led the team of scientists. But the thin panels are not as efficient as the thicker ones. While some solar panels now operate at an efficiency of about 20 per cent, the new flexible panels are only 7 per cent efficient. But the thinner panel is cheaper. An A4 sized panel put onto the back of a jacket cost less than US$13. It could charge a cellphone during a summer walk in the countryside. As long as you stay within range of the transmitting masts that relay a call to the networks, phones will never again run out of power.
Question: The passage is written to _ .
Options: (A) advertise a new product (B) explain how a new product works (C) introduce a new product (D) comepare different ways to use solar energy
Output: C