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Article: It would be hard to find a person in America who has never eaten a hamburger, but this popular food was not originally made in America. The original hamburger can be traded back to the Middle Ages, when Russians ate raw meat that was scraped   and shredded  with a dull knife and formed into patties  , It was called Tartar steak. This was the first step in a long series of developments that eventually resulted in hamburger as we know it today.    German sailors picked up the raw meat delicacy   in their contacts with Russians and brought it back to their home port of Hamburg. But the people there were unused to eating raw meat , so they broiled   the outside of the Russian steak; thus the hamburger steak was born.    The hamburger steak was brought ot America in the nineteenth century immigrants. Louis Lasssen, a cook in New Haven, Connecticut, modified  the hamburger steak by sandwiching it between two pieces of  bread. But the true American hamburger came into existence in St. Louis at the Louisiana Purchase Exposition in 1904. A harried cook at the fair quickly slapped broiled beef patties between buns and served them to a demanding crowd, which gulped them down joyously.  At first this new food creation was made from scraps of poorer cuts of meat that were not used for anything else, but before scrapes were not enough. The demand for greater quantities of hamburger could only be met by using more and better cuts . Hamburger stands sprang up all over the country, and a side industry of condiments , such as ketchup and relish, grew 
 Question: What would be the best title for this passage? 
 Options: (A) The St.Louis Fair (B) .Russian Eating ?Habits (C) The Development of the Hamburger (D) The First Hamburger Stand
Example Output: C

Example Input: Article: Throughout history there have always been people who can make other people laugh. Early clowns often both annoyed and delighted listeners with their comments and songs. They were not the silent performers seen in today's circus rings. Clowns  _ when the big three-ring circuses made it impossible for the audience to hear them. Circus clowns give performances in various ways. Walk-around clowns use an animal or something, like a huge rubber hammer, as part of their performance. A carpet clown moves around, talking with the audience and performing while the acts change in the rings. Then there are acrobatic clowns, riding clowns, juggling clowns and others.  Everything a clown does looks easy, but it is not. Making people laugh can be hard work. Clowns must be in good physical condition to prevent injuries. Each funny move is carefully timed and well-rehearsed  . Most clowns have also been trained as acrobats, jugglers or aerial artists, and many include such skills into their acts. Generally, there are three types of circus clowns--whiteface, auguste and character. Each has a special makeup and clothes. Each has a typical act as well. The neat whiteface is usually a strict, in-charge character who sets up the punch line (the point of a joke) with a partner who is typically an auguste. His facial makeup is neatly detailed in red or black, and his clothes look so loose with a ruffle around the neck.  Old circus stories have it that the auguste clown got his name from a German nickname for someone who is clumsy, acting in a careless and stupid way. The auguste wears light-coloured makeup, but white is used around the mouth and eyes, and there's a big red nose. This clown performs a great deal of humour. An oversized suit or baggy trousers allow freedom of movement for all the clumsy acts. He also wears big shoes. Character clowns perform as different characters--cowboys, grandmothers or concert conductors. The most famous character clown, however, is the tramp  . Tramps wear different styles of makeup and torn clothes. Some tramp clowns are happy-go-lucky. Others are extremely sad. Still others act like gentlemen who just happen to be out of money. 
 Question: By saying that clowns "lost their voices", the author means they   _  . 
 Options: (A) became silent to avoid annoying people (B) began to perform silently because of larger audiences (C) realized audience members often spoke another language (D) discovered that three-ring circuses were becoming more popular
Example Output: B

Example Input: Article: The researchers, led by Hwang Woo-suk, insist they cloned an Afghan hound, only to help investigate   human disease, including the possibility of cloning stem cells   for treatment purposes.  But others immediately renewed calls for a global ban on human reproductive cloning before the technology moves any farther.  "Successful cloning of an increasing number of species confirms the general impression that it would be possible to clone any species of mammals, including humans," said Ian Wilmut, a reproductive biologist at the University of Edinburgh who produced the first cloned mammal, Dolly the sheep, from an adult cell nearly a decade ago.  Researchers have since cloned cats, goats, cows, mice, pigs, rabbits, horses, deer, mules and gaur, a large wild ox of Southeast Asia. So far, efforts to clone a monkey or another primate with the same techniques have failed.  Uncertainties about the health and life span   of cloned animals continue to exsist; Dolly died at a young age in 2003 after developing cancer and arthritis.  Wilmut and others  _ Hwang's achievement, reported Wednesday in the journal Nature. But they said politicians and scientists must face the larger issue -- how to go on with the research without crossing the moral boundary of copying human life in the lab. "The ability to use the technology is hopeful," said Robert Schenken, president of the American Society for Reproductive Medicine. "However, the paper also points out that in dogs as in most species, cloning for reproductive purposes is unsafe."  The cloned puppy was the lone success from more than 100 dogs implanted  with more than 1,000 cloned embryos.  In a news conference in Seoul, the cloning team also condemned the reproductive cloning of humans as "unsafe and inefficient." Human reproductive cloning already is banned in South Korea. Other nations, including the United States, are divided on whether to ban just human cloning or cloning of all kinds, including the production of stem cells. 
 Question: An Afghan hound is a kind of   _  . 
 Options: (A) cat (B) dog (C) cow (D) goat
Example Output:
B

