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: The best family vacation that I ever had was going on a road trip to Myrtle Beach. The trip was for 2 weeks during the March break from school. This trip was probably about 20 years ago so it was before the time of things like portable video games and being able to watch movies in the back seat.2 So to pass the many hours of travel my brother and I had to entertain ourselves and each other. My mum would set the back seat up so that it was our own little playroom. She would pack everything up so that we had a big level area to play in. We would play cards and board games.C When it got to the point where we were at each other's throats we would be sent back to our own side of the seat and would be forced to either nap or read by ourselves until we could be friendly to each other again. I can remember us playing for quite some time when we turned the back seat into a spaceship and traveled around the earth.f Another time we turned it into a kitchen and had a bake-off . But the thing that I remember the most and that gave us many hours of enjoyment was using each other's faces as silly Plasticine and making funny faces. We would see how far we could stretch each other's mouths open, see how thin we could make the other's eye by pulling on it. We would keep going until one of us begged for mercy because we had to give our faces a rest.7 So while I can remember us having a great time on the beach, laughing a lot trying to put the tent up in the rain, what I remember the most of that trip and what always makes me smile the most is remembering the pain that our faces would be in after the trip.g
Question: What did the author do when traveling to Myrtle Beach?m
Options: (A) Watch movies.W (B) Play video games.2 (C) Have fun with his brother.8 (D) Pack things up to amuse himself.e
Example Output: C

Example Input: Article: How men first learned to invent words is unknown; in other words, the origin of language is a mystery. All we really know is that men, unlike animals, somehow invented certain sounds to express thoughts and feelings, actions and things, so that they could communicate with each other; and that later they agreed upon certain signs, called letters, which could be combined to represent those sounds, and which could be written down. Those sounds, whether spoken, or written in letters we call words. The power of words, then, lies in their combinations - the things they bring up before our minds. Words become filled with meaning for us by experience; and the longer we live, the more certain words recall to us the glad and sad events of our past; and the more we read and learn, the more the number of words that mean something to us increases. Great writers are those who not only have great thoughts, but also express these thoughts in words which appeal powerfully to our minds and feelings. This charming and telling use of words is what we call literary style. Above all, the real poet is a master of words. He can convey his meaning in words which sing like music, and which by their position and association can move men to tears. We should therefore learn to choose our words carefully and use them accurately, or they will make our speech silly and rude.
Question: The origin of language _ .
Options: (A) is reflected in sounds and letters (B) is handed down from generation to generation (C) dates back to the prehistoric period (D) is a problem not yet solved
Example Output: D

Example Input: Article: Chopsticks Brothers, China's Internet singing stars, will sing their hit Little Apple at the 2014 American Music Awards. Chopsticks Brothers are known as director Xiao Yang and musician Wang Taili. They played a middle-aged singing group in the film Old Boys: The Way of the Dragon. In the film, they sang Little Apple when they took part in an American music talent show and they succeeded. Now, life is following art. Chopsticks Brothers will really go to America to sing their song. They will join well-known singers including Taylor Swift. "I did not expect the _ in our film to come true in real life," Xiao Yang said during an interview. "It doesn't seem real. This is another story of dreams coming true for 'old boys'," said Wang Taili. This is the first time a Chinese Internet song will be on the international stage. Little Apple has been more and more popular on China's Internet. Its MP3 received 579 million hits. And people have watched the music videos 823 million times on China's Internet. The song has had at least 500 million listeners around the world. China's famous singer and songwriter Liu Huan said he liked Little Apple during an interview. "Everybody's singing and dancing with Little Apple and I think that's a good phenomenon . And I'm glad I can see Taylor Swift and Chinese singers sing on the same stage."
Question: What will Chopsticks Brothers do?
Options: (A) They will sing the song Little Apple on the Internet (B) They will take part in an American music talent show (C) They will sing the song Little Apple at the 2014 American Music Awards (D) They will play a singing group in the film Old Boys: The Way of the Dragon
Example Output:
C