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.

Article: What would life be like without rich, creamy, mouthwatering, melt-in-your-mouth chocolate? Life would be bitter for most Americans. They spend about $13 billion a year buying all sorts of chocolate treats. However, for the African children who toil under slavelike conditions on cacao plantations, life is not sweet. The cacao bean is the main ingredient in the chocolate. According to a 2002 survey by the International Institute of Tropical Agriculture and the US Agency for International Development, about 284,000 children work in dangerous conditions on cacao farms in western Africa. More than half those children are younger than 14. Many were sold into forced labor to work 12 hours or more a day on the cacao plantations. A number of international organizations, including several African governments, recently began a program to eliminate child labor on cacao plantations. Under the program, government officials will remove children from abusive working situations while teaching farmers about child labor issues. The program will also make borrowing money easier for cacao farmers. Officials hope farmers will use the money to invest in their farms and hire paid laborers.
Question: The cacao bean is the main ingredient in _ .
Options: (A) treats (B) coffee (C) chocolate (D) cigarettes
C

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
C

Article: Most city parks are places where you can escape from big, ugly structures of metal and stone. The Manhattan High Line is different. Raised 25 feet above the ground, this large metal structure once supported a rail line. The line opened in 1934 to bring trains directly into factories. It was hardly used after the 1960s, and much of it was torn down. However, one part remained in a region of Manhattan called Chelsea. Chelsea was becoming high-class as restaurants, art galleries and apartments were built, but the ugly railway structure remained as _ . Everyone knew that at some time, it would have to be removed. But the High Line was not destroyed. In fact, now the old rail line serves as one of the most peaceful places in the city. It holds an elevated park, with beautiful gardens and great views of the city. The idea to turn the rail line into a park came from Joshua David and Robert Hammond. In 1999, they attended a meeting to decide how to deal with the High Line. David and Hammond were the only people at the meeting interested in saving the historical structure. Later on, when they asked railway officials to take them up to look at the High Line, they saw a mile and a half of wild flowers growing in the middle of the city, and they realized that the High Line had potential to become a park. There was growing interest in improving city centers, and so the project quickly developed and money for construction was easily collected. The first section of the High Line opened in 2009 and immediately became popular with tourists and locals alike. Each part of the park has a different atmosphere. Some areas are like balconies with wonderful city views. Where the rail line goes between buildings, trees are thickly planted. Other sections have wide lawns and walkways planted with wild flowers. Only the final section remains the way it has been for the last fifty years.
Question: What is the text mainly about?
Options: (A) Protection of cultural relics. (B) An unlikely place for a park. (C) Improving city transport. (D) Closing a train line.
B