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.

[Q]: Article: "Gangnam Style" by singer Psy from Korea, is a popular song, but its extraordinary global success is really the result of its music video, which is a great piece of genius. On September 22nd, Guinness World Records listed "Gangnam Style" as the most-liked video in the history of YouTube. It's been performed at West Point (West-Point Style), and Google's CEO, has done the "Gangnam Style" horse dance at the company's office in Seoul. Even Samsung is trying to make Psy the new model for the latest type of fridge. The song's global popularity is such that the vast majority of people who enjoy it don't speak Korean, and have no idea what it is about. That's fine --- part of what makes "Gangnam Style" so fun is, like international pop music, the difficulty in understanding it. When we sing along, "Hey, sexy lady", we don't really know what we're singing about. The joy of _ is familiar to anyone who loves pop music from elsewhere. Anthony Lane, in his 2010 review of the Eurovision Song Contest, Only Mr. God Knows Why, used "Eurovision English" as one of its chief pleasures. It's "a complex tongue, spoken nowhere else, which raises the heartfelt poetry but absolute nonsense to a level of what sci-fi writers could only have dreamed. " In similar ways, "Gangnam Style" is just an over-the-top video where a fat man does a funny dance and sings repetitive words that don't make sense to most of us. But on the other, the magic of the song also lies in its funny dance, which reflects not just cultural morals specific to Korea, but cultural values easily recognizable to western viewers. This song's words may be in Korean, but its scenes are in clear American. The dance moves are simple enough to copy. Nonsense, in other words, forces us to let down our guards. It makes us relax, and asks us to let in all sorts of feelings from which, otherwise, we might distance ourselves. "Gangnam Style" happens to be so interesting because of its incomprehensibleness.
Question: Some complex languages are used in pop music because _ .
Options: (A) singers regard it as one of the chief pleasures at the concert (B) they make the music hard to understand but poetic and attractive (C) the music can sound more pleasant and beautiful to the audience (D) people like listening to the music which makes special sense to them
[A]: B

[Q]: Article: The Mysterious Universe By Ellen Jackson and Nic Bishop How did the universe begin? How big is it? What is dark matter? Cosmologist and expert supernova hunter Alex Filippenko hopes that supernovas can help us answer some of these questions. But first we've got to find them! Join Alex and his team as they go on the hunt with huge telescopes and banks of computers. The Time and Space of Uncle Albert By Russell Stannard What would you say if your uncle asked you whether you would like to go into space? You'd say, "When do I leave?", just like the girl in this story. Gedanken is speeding across the universe trying to help her uncle answer some questions, such as "How big is space?" and "Where does gravity come from?" Along the way she also discovers how to get heavier without getting fat, how to live forever without knowing it, and the strange things that can happen when you go really fast. George's Secret Key to the Universe By Lucy Hawking and Stephen Hawking When George chases his pet pig through a hole in the fence, little does he expect that he will soon be riding a comet around Saturn . But just as he discovers the joys of space exploration with the computer Cosmos, which can open doors anywhere in the universe, everything starts to go wrong. When George's lest-favorite teacher steals Cosmos and traps his friend's dad in a black hole, can George set things right in time? A Child's Introduction to the Night Sky By Michael Driscoll With a telescope or without one, this book can get you started exploring planets, stars and even strange stuff like time, space, and black holes. The universe is a big place, but this book comes with a handy star finder that you can take out with you at night to help you find your way around the stars. Look up and discover the universe!
Question: According to the text, Alex Filippenko _ .
Options: (A) invented huge telescopes (B) is looking for supernovas (C) doesn't need many computers (D) knows a lot about dark matter
[A]: B

[Q]: Article: One day when I opened my email, a beautiful woman named Rachel appeared on my computer screen. She greeted me by name and started talking with great enthusiasm. Every now and then she stopped to smile at me or blow a kiss. It was pretty cool. Rachel was there thanks to Facemail. Facemail lets you send email that gets read to the receiver by an attractive male or female form. The free software can be downloaded at www.facemail.com, and you can choose different faces. The basic idea is pretty clever. The Facemail people have taken biologically based imaging and used it to create lifelike digital faces. The voice reading the email is standard. And Facemail will get more interesting. Soon you can have your own voice read the email you send. The company has signed a deal with Kodak and next year you can submit your photo and your own face will be the one reading your email. LifeFX, the company that produces Facemail, says that one reason e-commerce is struggling is that buying over the Internet lacks the human touch. But what if you went to the Nike website and Michael Jordan greeted you by name and waited on you? The company will also use Facemail to make greeting cards and living wedding albums. Personally, I'm a fan of Facemail. But Facemail should be used carefully. If you select an angry face, put a few harsh words and add some angry emotions, you've got Psycho-mail.
Question: The main advantage of Facemail is that one can _ .
Options: (A) see the person that sends the email (B) have the email read in a more lovely way (C) design the email in any way he / she likes (D) ask a beautiful woman to read his / her email
[A]:
B