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 longest bull run in a century of art-market history ended on a dramatic note with a sale of 56 works by Damien Hirst, Beautiful Inside My Head Forever, at Sotheby's in London on September 15th 2008. All but two pieces sold, fetching more than PS70m, a record for a sale by a single artist. It was a last victory. As the auctioneer called out bids, in New York one of the oldest banks on Wall Street, Lehman Brothers, filed for bankruptcy, starting the most severe financial crisis since the 1920s. The world art market had already been losing momentum for a while after rising confusingly since 2003. At its peak in 2007 it was worth some $65 billion, thinks Clare McAndrew, founder of Arts Economics, a research firm -- double the figure five years earlier. Since then it may have come down to $50 billion. But the market generates interest far beyond its size because it brings together great wealth, enormous egos , greed, passion and controversy in a way matched by few other industries. In the weeks and months that followed Mr. Hirst's sale, spending of any sort became deeply unfashionable. In the art world that meant collectors stayed away from galleries and salerooms. Sales of contemporary art fell by two-thirds, and in the most overheated sector, they were down by nearly 90% in the year to November 2008. Within weeks the world's two biggest auction houses, Sotheby's and Christie's, had to pay out nearly $200m in guarantees to clients who had placed works for sale with them. The current downturn in the art market is the worst since the Japanese stopped buying Impressionists at the end of 1989. This time experts suppose that prices are about 40% down on their peak on average, though some have been far more volatile . But Edward Dolman, Christie's chief executive, says, "I'm pretty confident we're at the bottom." What makes this fall different from the last, he says, is that there are still buyers in the market, while in the early 1990s, when interest rates were high, there was no demand even though many collectors wanted to sell. Christie's earnings in the first half of 2009 were still higher than in the first half of 2006. Almost everyone who was interviewed for this special report said that the biggest problem at the moment is not a lack of demand but a lack of good work to sell. The three Ds -- death, debt and divorce -- still deliver works of art to the market. But anyone who does not have to sell is keeping away, waiting for confidence to return.
Question: Which of the following statements is true?
Options: (A) .Sales of contemporary art fell dramatically from 2003 to 2008. (B) The art market didn't match many other industries in momentum. (C) The market generally went downward in the same way. (D) Some art dealers were awaiting better chances to come.
Example Output: D

Example Input: Article: Trees are useful to man in three important ways: They provide him with wood and other products; they provide him shade;. and they help to prevent droughts and floods. Unfortunately, in many parts of the world, man has not realized that the third of these services is the most important.In his eagerness to make money from trees, he has cut them down in large numbers, only to find that without them he has lost the best friends he had. And besides, he is usually too careless to plant and look after new trees. So the forests slowly disappear. This does not only mean that man will have fewer trees. The results are even more serious: for where there are trees, their roots break up soil allowing the rain to sink in and also bind the soil, thus preventing it from being washed away easily;but where there are no trees, the rain falls on hard ground and flows away, causing floods and carrying away the rich top-soil. When the top-soil is gone, nothing remains but worthless desert. Two thousand years ago,a rich and powerful country cut down its trees to build warships, with which to gain itself an empire .It set up the empire, but, without its trees, its soil became poor and grew weak. When the empire fell to pieces, the home country found itself faced by floods and starvation .
Question: The most important service of trees to man is that _ .
Options: (A) they give them wood and other products (B) they give them shade (C) they help him prevent droughts and floods (D) they help him made money
Example Output: C

Example Input: Article: The words "winner" and "loser" have many meanings. When we refer to a person as a winner, we do not mean one makes someone else lose. To us , a winner is one who responds authentically by being credible ,trustworthy, responsive , and genuine, both as an individual and as a member of a society. Winners are not afraid to do their own thinking and to use their own knowledge! They can separate facts from opinons and don't pretend to have all the answers. They listen to others. evaluate what they say, but come to their own conclusion. Although winners can admire and respect other people, they are not totally defined, demolished, bound, or awed by them. Winners do not play "helpness", nor do they the blaming game. Instead, they assume responsibility for their own lives! They do not give others a false authority over them. Winners are their own bosses and know it. A winner's timing is right. Winners respond appropriately to the situation. Their responses are related to the message sent. They know the importance and the value of the people involved. Winners know that for every thing there is a season and for every activity a time. Although winners can freely enjoy themselves, they can also postpone enjoyment, can discipline themselves in the present to enhance their enjoyment in the future. Winners are not afraid to go after what they want, but they do so in appropriate ways. Winners do not get their security by controlling others. They do not set themselves up to lose. A winner cares about the world and its peoples. A winner is not _ from the general problems of society ,but is concerned, compassionate, and committed to improving the quality of life. Even in the face of national and international adversity, a winner's self-image is not one of a powerless individual. A winner works to make the world a better place.
Question: Which of the following can best describe a winner?
Options: (A) reliable, independent, responsible and enthusiastic (B) Good - looking, responsible, enthusiastic and reliable (C) independent, reliable, aggressive and responsible (D) reliable, humorous, independent and enthusiastic
Example Output:
A