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.

Input: Consider 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.

Output: D

Input: Consider Input: Article: Welcome to Arundel Castle which is situated in West Sussex, England. The castle has a history of nearly 1000 years and has welcomed visitors traveling from all over the world. Arundel Castle also plays a starring role in many films. _ The White Garden is planted with soft white Iceberg Roses, and Snow White Lilies. The Rose Garden is newly planted with lovely old-fashioned English roses that are at their very best in June and July. The Organic Kitchen Garden produces a wide range of seasonal fruit and vegetables, pears, cherries and apples. _ In the Castle Shop, you will discover a wide and interesting range of gift ideas for everyone. It offers gifts and souvenirs designed to appeal to all tastes and pockets. Foods, china, books, and stationery are all available. Many are sold in this Castle Shop only. At Arundel Castle we pride ourselves on supporting local suppliers and actively encourage environmentally friendly products. _ Saturday 16th to Monday 25th August The annual Arundel Festival gets bigger and better every year. It is one of the most amazing, diverse and easily accessible arts festivals in the UK, offering a mix of visual arts, music, theatre and street entertainment. _ Coaches and mini-buses can drop off at the main Castle entrance in Mill Road and park in the main town car park that is opposite the Castle entrance. Please inform us when making your booking of how many parking permits are required.
Question: When visiting the castle, you can _ .
Options: (A) get old-fashioned English roses as gifts (B) buy eco-friendly products in the Castle Shop (C) get seasonal fruit and vegetables for free (D) see how the local gifts are being made

Output: B

Input: Consider Input: Article: In the past, going to a piano teacher was the most popular way to learn how to play the piano. You could get one-to-one teaching and have the opportunity to learn as much as the teacher knew. If you didn't have private lessons, you could still learn the piano, but you would have to teach yourself. This was easy for some, but very difficult for most. However, with technology developing today, there is at last another way that you can take piano lessons. You can take an online course. An online course is much cheaper than a private lesson. _ . You can take a whole online course in piano for just a fraction of the money that you would spend on weeks of private lessons. Also, private lessons are usually only one hour per week. So you would have to wait for your next lesson to continue your learning. However, online piano courses are quite different. With an online piano course, you can work at your own pace. You can also take as many lessons per week as you want, or go back and listen to your last lesson if you have forgotten anything. Most adults who want to learn how to play the piano enjoy being able to go back and listen to the lessons again. Of course if you need someone to sit beside you and offer you immediate feedback as you are playing, you might not get that from an online piano course. However, the lessons online can be viewed at any time, or as often as you'd like, which means that you can get your own type of feedback from an online piano course.
Question: This passage mainly tells us _ .
Options: (A) the disadvantages of the traditional ways of learning to play the piano (B) the differences between traditional piano courses and online courses (C) why people prefer online piano courses to traditional piano courses (D) the advantages of learning to play the piano through an online course
Output: D