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: Elephants and people are in competition for space. In much of Africa, elephants are now put in national parks. Elephants suffered a serious and steady decrease in numbers in the 1970s. This was the same time when scientists were beginning to learn a great deal about elephants and their behavior. Studies through the 1980s and into the 1990s showed a lot about their sounds and methods of communication. In Kenya alone, in the 1970s and 1980s, the elephant population decreased from 170,000 to 25,000. The sharp drop in numbers was the result of poachers illegally killing elephants for their ivory. The price of ivory went from $3 a pound to $50 to $100 a pound. Africa became very attractive to poachers. Bull elephants carried the largest tusks , so they were more often killed. With males gone and older females killed by poachers as well, there were many young elephants unable to benefit from the wisdom of the older females and matriarchs, who lead the herds. Kenya took a stand, international trade in ivory was officially forbidden, and $3,000,000 worth of confiscated ivory was burned in Kenya. The following year, only 50 elephants were lost to poachers in Kenya instead of 3,000. But Kenya has the fastest growing human population in the world. People throughout Africa won't tolerate elephants eating their crops and destroying their livelihoods. In South Africa, elephants live behind the fences of national parks. In some parts of Africa, big-game hunters pay a lot of money to hunt elephants. This keeps their numbers down, and the money goes toward conservation. In Kenya, there were some attempts at birth control to keep the elephant population at manageable numbers to reduce conflicts with people. Faced with a growing human population, elephants are losing the battle for space. It's unlikely, though, that they will become extinct. They will live in natural parks that bring tourists to Africa as well as India and other parts of Asia. The money from tourism will help elephants to survive.
Question: Bull elephants were at higher risk of being killed because _ .
Options: (A) they were the leaders of the herds (B) they possessed bigger ivory (C) they were of smaller size (D) they ran slowly

Ex Output:
B

Ex Input:
Article: The opening of the Sherlock Holmes Museum to the public on March 27, 1990, was an event that should have happened several decades ago. Baker Street is, after all, one of the world's most famous streets because of its long association with the great detective. Thousands of people all over the world write to Sherlock Holmes, they form clubs and societies in his honor, and they celebrate his anniversaries. Now it is also possible to see where and how he lived in Victorian times! Here visitors will recognize familiar objects mentioned in the stories. You can take as many photographs as you want (the maid will be pleased to assist) and when you are ready to leave, a ride home in a horse-drawn carriage will complete your 19th century experience! Sherlock Holmes and Doctor Watson lived at 221b Baker Street from about 1881 to 1904. Apartment 221b was on the first floor of a lodging house, which they rented from a Mrs Hudson. The famous study that Holmes and his friend Dr Watson shared for almost 25 years is on the first floor overlooking Baker Street. We know from Doctor Watson's descriptions that their sitting room overlooking Baker Street was "illuminated(, ) by two broad windows" and that it was quite small. Doctor Watson's bedroom was on the second floor next to Mrs Hudson's room and it overlooked an open yard at the back of the house. These rooms are used today for exhibits, where center stage is taken by a magnificant bronze bust of Mr Holmes. Visitors can browse through literature, paintings, photographs and newspapers of the period. Memorabilia from the adventures and a selection of letters written to and from Mr Holmes are also on display. The museum's large and attractive souvenir shop is located on the ground floor. Here you will find a unique collection of gifts, objects of art, figures, busts, prints, books, playing cards, T-shirts, -novelties of every description available exclusively to museum visitors.
Question: According to the article, we can conclude that Sherlock Holmes' admirers _ .
Options: (A) expect replies from him (B) made the opening of the museum possible (C) treat him as if he were a real person (D) often adapt his books into films or plays

Ex Output:
C

Ex Input:
Article: Characters in novels don't always do what the writer wants them to do. Sometimes they cause trouble, take on lives of their own, or even work against the writer. It's not just a problem for inexperienced authors: famed children's novelist Roald Dahl said he got the main character in his bookMatildaso "wrong"that when he'd finished his first version, he threw it away and started again. Of course it's not the characters' fault. The problem lies with the author. Take Stephen King, who admitted that writing working-class characters is more difficult nowadays because his own circumstances have changed. "It is definitely harder,"King said."When I wroteCarriemany years ago, I was one step away from physical labour." This is also true for characters' ages, added King."When you have small children, it is easy to write young characters because you observe them and you have them in your life all the time. But your kids grow up, it's been harder for me to write about this little 12-year-old girl in my new book because my models are gone." For other authors, such as Karen Fowler, there's one quality that can stop a character in its tracks: boredom."I had particular problems with the main character in my historical novelSister Noon,"she says."She had attitudes about race and religion that seemed appropriate to me for her time and class, but they were not attitudes I liked. Eventually I grew quite bored with her. You can write a book about a character you dislike or a character you disagree with, but I don't think you can write a book about a character who bores you." According to Neel Mukherjee, it was Adinath, a character inThe Lives of Others, who made him work the hardest."I think I struggled because it's difficult to write a character whose most prominent personal feature is weakness, as Adinath's is, without making that feature define him,"Mukherjee says. But a troublesome character is far from an unwelcome guest, he continues, arguing that "when characters work against the author they come alive and become unpredictable". "That is a fantastic thing to happen,"Mukherjee says."I celebrate it. It is one of the great, lucky gifts given to a writer."
Question: What can we infer about Stephen King's bookCarrie?
Options: (A) It was his most difficult book to write. (B) It was the first successful novel King wrote. (C) There were few children featured in the story. (D) Some of its main characters were working class.

Ex Output:
D