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: In England, we look forward to our birthdays for 364 days a year! We invite special people to celebrate it with us. The Presents Presents are opened as soon as the children are awake. They can't wait for the birthday cake later in the day! The Cards Friends and family send birthday cards. Sending birthday cards is a custom that began in England about 100 years ago. The Party The birthday child will have a party to which friends and family are invited. Visitors to the party bring presents for the birthday child. The children play games such as musical chairs and pass the parcel . The Cake The birthday cake is decorated on a theme . A candle for each year is lit and placed on top and the child blows out the candles making a wish. We don't put objects inside the cake as stated on many websites. The Bumps It used to be traditional for the birthday child to have the bumps. Friends would hold the child by the legs and under the arms and lift the child up and down bumping them gently on the ground. The number of bumps given is the age of the child plus one for extra good luck. As this can be dangerous, clapping is often done instead. The Sweets Some children do take sweets to school to share with their classmates on their birthdays.
Question: In England, the birthday present is opened _ .
Options: (A) before the child wakes up (B) immediately after the child wakes up (C) as soon as the child gets up (D) during the birthday party

Ex Output:
B

Ex Input:
Article: When I was a child I never said, "When I grow up, I want to be a CEO," but here I am. When I look back on my career, I realize the road to becoming a CEO isn't a straight, clearly clarified path. In fact, no two paths are the same. But whether you want to be a boss one day or not, there's a lot to learn from how leaders rise to the top of successful companies. As this series of stories shows, the paths to becoming a CEO may vary, but the people in that position share the qualities of commitment , work ethic and a strong desire for building something new. And every CEO take risks along the way--putting your life savings on the line to start a software company or leaving a big business to be one of the first employees at a startup. I grew up in Minnesota, and learned how to be an entrepreneur from my father, who has run a small business for almost 30 years. I went to Georgetown University and tried a lot of business activities in college with varying degrees of success. And I always had a dream job pattern: to walk to work, work for myself and build something for consumers. I'm only 29, so it's been a quick ride to CEO. Out of college, I worked for AOL as a product manager, then moved to Revolution Health and ran the consumer product team. In mid-2007 I left Revolution Health and started LivingSocial with several other colleagues, where I became a CEO. Career advice: Don't figure out where you want to work, or even what industry you'd like to work at. Figure out what makes you do so. What gives you a really big rush? Answer why you like things, not what you like doing...and then apply it to your work life. Also, just because you're graduating , don't stop learning. Read more books than you did in college. If you do, and they're not, you're really well in a position to succeed in whatever you do.
Question: According to the author, successful CEOs should _ .
Options: (A) try not to take risks (B) stay in the same business (C) have a strong sense of creativity (D) save every possible penny

Ex Output:
C

Ex Input:
Article: Searching for airfares often seems like a game that passengers are bound to lose. Prices change from day to day, even minute to minute. Looking through multiple websites for the best deal can be a big challenge. Even when you do book, there's no guarantee that you are going to get the best price. "You just don't know when to _ . It's not like buying anything else I can think of," said George Hobica, founder of Airfarewatchdog.com. Harriet Levy paid $179 for a recent round-trip flight on American Airlines between New York and Fort Lauderdale, Florida. Sitting just one row behind her, Shirley Harrison paid $215. A few rows back, Ellis and Dianne Traub paid $317 each. There were at least 12 fares on the flight, ranging from $169 to $360. There's no reason for it, Harrison said. Fares can fluctuate significantly in just a few hours. One Delta flight from New York to Los Angeles jumped from $755 to $1,143 from a Friday to Saturday in late April, then fell to $718 on Sunday. The flight was one of a dozen the Associated Press followed over three months for a vacation between July 16 and 22. The number one finding: avoid booking tickets on weekends. It's the most expensive time to buy. There's no way to guarantee the best fare. But before booking, travelers should pay attention to this additional advice: * Book on Tuesday, Wednesday and Thursday. That's when airlines most often offer sales. * Buy in advance, but not too early. The best time is four to six weeks before traveling. In general, prices for any given flight are highest eight to 10 weeks and two to three weeks in advance. * Make use of social media. Airlines are giving more benefits like exclusive sales to travelers who interact with them on Twitter and Facebook. Those specials are often gone within hours. * The so-called discount airlines - JetBlue, Air-Tran, Southwest and Frontier - adjust their fares less frequently than other airlines, so you can feel more confident that the price will stay the same. But their prices aren't always the lowest. Researching multiple airlines' fares is the only way to get a good deal.
Question: What can we infer from the first sentence of the text?
Options: (A) Passengers are unable to search for airfares. (B) Airlines often play games with passengers. (C) Airfares are set in different situations. (D) It's difficult for passengers to get the best price.

Ex Output:
D