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.

Ex Input:
Article: A scientist working at her lab bench and a six-old baby playing with his food might seem to have little in common.After all,the scientist is engaged in serious research to uncover the very nature of the physical world,and the baby is,well, just playing...right?Perhaps,but some developmental psychologists have argued that this"play"is more like a scientific investigation than one might think. Take a closer look at the baby playing at the table.Each time the bowl of rice is pushed over the table edge,it falls in the ground---and, in the process, it belongs out important evidence about how physical objects interact ; bowls of rice do not flood in mid-sit, but require support to remain stable. It is likely that babies are not born knowing the basic fact of the universe; nor are they ever clearly taught it. Instead, babies may form an understanding of object support through repeated experiments and then build on this knowledge to learn even more about how objects interact. Though their ranges and tools differ, the baby's investigation and the scientist's experiment appear to share the same aim(to learn about the natural world ), overall approach (gathering direct evidence from the world), and logic (are my observations what I expected?). Some psychologists suggest that young children learn about more than just the physical world in this way---that they investigate human psychology and the rules of language using similar means. For example, it may only be through repeated experiments, evidence gathering, and finally overturning a theory, that a baby will come to accept the idea that other people can have different views and desires from what he or she has, for example, unlike the child , Mommy actually doesn't like Dove chocolate. Viewing childhood development as a scientific investigation throws on how children learn ,but it also offers an inspiring look at science and scientists. Why do young children and scientists seem to be so much alike? Psychologists have suggested that science as an effort ---the desire to explore, explain, and understand our world---is simply something that comes from our babyhood. Perhaps evolution provided human babies with curiosity and a natural drive to explain their worlds, and adult scientists simply make use of the same drive that served them as children. The same cognitive systems that make young children feel good about feel good about figuring something out may have been adopted by adult scientists. As some psychologists put it, "It is not that children are little scientists but that scientists are big children."
Question: According to some developmental psychologists,
Options: (A) a baby's play is nothing more than a game. (B) scientific research into babies; games is possible (C) the nature of babies' play has been thoroughly investigated (D) a baby's play is somehow similar to a scientist's experiment

Ex Output:
D

Ex Input:
Article: Did you ever think someone was scary because they looked different or ate strange food? Well, they might think the same about you! One of the things we all need to do is to _ variety.We shouldn't think badly of people from other cultures because they behave differently from us. Sometimes we treat people from other countries unfairly, because one person from that culture did something bad.Well, has your class ever been punished just because a few kids were causing trouble? Has your whole family ever been blamed for something your little sister did? It doesn't seem fair, does it? It's just equally unfair to blame a whole culture for what two or three people have done. So here are some things that you can do to help yourself understand other cultures: 1Find common ground! Just remember that even though some people look different on the outside, that doesn't change how they are on the inside.They still have the exact same feelings! 2 _ Because someone from another culture has been mean to you, you decide to avoid everyone from that culture.Well think about it.Why are you blaming them for something they didn't have anything to do with? Put yourself in their shoes.How would you feel? Putting yourself inside someone else's head can be a very powerful way to understand WHY they are acting the way they are. 3Try to make friends with people from other cultures! You could ask them about their culture, or what it is like in their country, if they can remember, or if they have ever lived there.Try foods from their culture, or ask them about words in their language.You might be surprised at how interesting other cultures can be! You can join great discussion groups, participate in projects, and have lots of fun doing new things. 4Be aware that you've judged other people If you know what you have done, it helps to make things better.Pay attention to what you think about other people.It helps.
Question: What is mainly discussed in this passage?
Options: (A) Why there are differences between people (B) What to do to understand other cultures (C) How people feel when they meet people from other cultures (D) The differences between people from different cultures

Ex Output:
B

Ex Input:
Article: Dear iPhone 4 Users, The iPhone 4 has been the most successful product in Apple's history. It is the best smartphone ever, and most users have told that they love it. So we were surprised when reading reports of reception problems, and we immediately began researching them. To start with, holding tightly almost any mobile phone in certain ways will reduce its reception by 1 or more bars of signal strength. This is true of iPhone 4, iPhone 3GS, as well as many other phones. But some users have reported that iPhone 4 can drop 4 or 5 bars when tightly held in a way. This is a far bigger drop than normal, and as a result some have said the iPhone 4 has a faulty antenna design. Upon research, we find that the formula we use to calculate how many bars of signal strength to display is totally wrong. Our formula usually mistakenly displays 2 more bars than it should for a given signal strength. The big drop in bars is because the high bars were never real in the beginning. We will give a free software update to correct the formula. This software update will also be available for iPhone 3GS. If you are not fully satisfied, you can return your undamaged iPhone to any Apple Retail Store or the online Apple Store within 30 days of buying and get all your money back. Thank you for your patience and support. Apple
Question: The iPhone 4 drops more bars than normal when tightly held because of _ .
Options: (A) a wrong antenna design (B) wrong usage (C) weak signal strength (D) a wrong formula

Ex Output:
D