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: Many adults in the United States can remember crying the nursery rhyme in the street "Hot cross buns!" But only a few people realize this was an early form of advertising. Written advertisements probably began with hieroglyphics more than three thousand years ago, but only a few people could read these symbols. So merchants made signs with pictures or hung their tools over their doors to identify their businesses. In the time of the Roman Empire, wall paintings were a popular form of advertisement. An ad for a play, or some other performance was painted on part of a building or on a wall around a city. People often advertised a house for rent or a freshwater bath in this way, too. Today, large wall signs are still used for outdoor advertising. But outdoor advertising is only a small fraction of the total advertising. About forty per -cent of all ads are printed in daily newspapers. Radio commercials also provide this kind of information. Some people think they are the best form of advertising because radio broadcasts reach almost everyone in a nation. Advertisements in magazines and on television reach many people, too. However, usually only large companies can advertise on a national network, because TV commercials shown across the country can cost many thousands of dollars. Then there are ads that are almost part of daily living. If you use public transportation, you will see large printed ads, called ear cards, on buses and taxis and in trains. Ads are painted on the trucks that deliver products people are buying or selling.
Question: Which is the passage mainly discussing?
Options: (A) Modern advertising (B) Significance of advertising (C) Development of advertising (D) Origin of advertising

Ex Output:
C

Ex Input:
Article: When it comes to movies, we usually think of big actors, big budgets, big screens, and, if lucky, big profits. Unfortunately, that puts up some big barriers for aspiring young filmmakers and their dreams. However, thanks to easy access to technology, that's all changing. All one really needs nowadays is a camera, a computer, an Internet connection, and, of course, a good idea. With that, you can enter the microfilm world. Shooting a movie using friends and family as the cast has become a common class project for high school students. After a little editing on a laptop, some even decide their creation is worth sharing online. Microfilms are shot within a short period of time and last only a few minutes or even shorter. Most are completed on an extremely small budget and offer a cheap way for grassroots directors to realize their dreams. With a range of film festivals, they have taken off due to being perfectly suited to new media platforms such as mobile phones and notebook computers. They are also easily shared across social networks and microblogs. But microfilms are far different from the shorts commonly found on YouTube. A microfilm must have a solid and thoughtful plot. Most importantly, the movies are easily distributed and there can be no concern about long-term box office profits. Most people who upload a microfilm simply see it as an easy way to share their fun with a few friends and family. Others may be curious about what sort of reaction their production may receive from the general public.
Question: According to the passage, what helps promising microfilmmakers realize their dreams?
Options: (A) The profits from microfilms. (B) Aids from friends and family. (C) Supports from the public. (D) Small costs for microfilms.

Ex Output:
D

Ex Input:
Article: Everyone knows that regular bedtimes are important, especially for children. But a research by Yvonne Kelly of University College, London, shows that daughters, it seems, do benefit from regular bedtimes. Sons do not. Dr Kelly and a team of colleagues examined the bedtimes and cognitive abilities of 11,178 children born in Britain between September 2000 and January 2002, who took part in a research project called the Millennium Cohort Study. The bedtime information they used was collected during four visits interviewers made to the homes of those participating in the study. These happened when the children were nine months, three years, five years and seven years of age. Besides asking whether the children had set bedtimes on weekdays and if they always, usually, sometimes or never made them, interviewers collected information about family routines, economic circumstances and other matters--including whether children were read to before they went to sleep and whether they had a television in their bedroom. The children in question were also asked, at the ages of three, five and seven, to take standardised reading, mathematical tests, from which their IQs could be tested. Dr Kelly's report shows that by the time children had reached the age of seven, not having had a regular bedtime did seem to affect their cognition. But that was true only if they were female. On the IQ scale, whose average value is 100 points, girls who had had regular bedtimes scored between eight and nine points more than those who did not. Boys were not completely unaffected. Irregular bedtimes left their IQs about six points below those of their contemporaries at the age of three. But the distinction disappeared by the time they were seven. This difference between the sexes is puzzling. "I did not expect it, and more research is necessary." said Dr Kelly.
Question: How long did the research last?
Options: (A) At least nine months (B) Nearly three years (C) Less than five years (D) About seven years

Ex Output:
D