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: It is amazing to note that the Internet is still such a new device, and yet it is one of the fastest and most powerful media tools. But think about it for a moment. On the Internet, a big online company can be run by two guys out of their garage. So it is only reasonable that people shopping on the Net would be a little _ of the security levels. Internet giants such as Microsoft knew consumer confidence was the key to getting virtual shopping off the ground, and they work hard to make people feel safe to shop online. Credit card companies, too, quickly saw the potential for Internet shopping, and have installed things like online shopping insurance for people. If you ever have a problem with your online credit purchases, many credit card companies will happily refund your money and then set their claws on the company that wronged you. Now that's buying power! There are other bonuses for online shoppers, of course. No line-ups, for one. No annoying mall shopping carts with broken wheels and kids crying because their parents won't get them what they want. When shopping online, consumers can sit down, have a coffee, and wear their slippers, not have to worry about their hair or parking and just click through sale after sale. Comparison shopping couldn't be any easier. And thanks to courier companies getting in on the act, you never need wait longer than a day or two to get those all important purchases delivered right to your door. No wonder so many companies are shaking their heads at traditional advertising and instead looking to the "virtual" world to attract online shoppers.
Question: _ leads to consumers' trust in online shopping.
Options: (A) Shopping law (B) Shopping convenience (C) Internet access (D) Shopping security

Ex Output:
D

Ex Input:
Article: "The Boxtrolls" From Laika Entertainment, the animation house behind "Coraline" and "ParaNorman" comes, "The Boxtrolls," adapted from the children's book "Here Be Monsters!" by Alan Snow. The movie, about a boy who is raised by unusual creatures, features the voices of Ben Kingsley, Simon Pegg and Elle Fanning. Opens Sept. 26. Area theatres. "Awake and Sing!" Olney presents the 1935 comic drama by Clifford Odets about a Brooklyn family struggling through the Great Depression. Step. 24 through Oct. 19. Olney Theatre Center, 2001 Olney-Sandy Spring Rd., Olney. 301-924-3400.www.olneytheatre.org. $38.50-63.50. Fiesta DC Celebrate the city's Latino culture with a parade, dance, music and more. Sept. 21. Parade: 10 a.m. to 1 p.m. Constitution Avenue from Seventh Street NW to 14thStreet NW. Festival: Noon to 7 p.m. Pennsylvania Avenue, between Ninth and 14thstreets NW. 202-489-7141.www.fiestadc. org. "On Paper: Alternate Realities" The 26 pieces by American artists, including Raymond Pettibon and lona Rozeal Brown, take inspiration from popular culture, using art to explore dark themes. Through April 12. Baltimore Museum of Art, 10 Art Museum Dr., Baltimore. 443-573-17000. www. artma. org. "Untitled: The Art of James Castle" A self-taught artist from rural Idaho, Castle used whatever was available-newspaper, coal, sticks-to create buildings, landscapes, people and more. Sept.26 through Feb.1. American Art Museum, Eighth and F streets NW. 202-633-1000. www. americanart. si. edu. Neo-impressionism at the Phillips "Neo-impressionism and the Dream of Realities: Painting, Poetry, Music" displays works by artists such as Georges Seurat, who presented stylized landscapes and people. Sept. 27 through Jan. 11. Phillips Collection, 1600 21stSt. NW. 202-387-2151. www. phillipscollection. org. $ 12; $ 10 for students and senitors; free for age 18 and younger. "Driving Miss Daisy" Ford's Theatre starts its season with the Pulitzer Prize winner about the decades-long relationship between an aging woman and her black driver in Atlanta. Washington stage actors Nancy Robinette and Craig Wallace perform in this beloved classic. Sept. 26 through Oct. 26. Ford's Theatre, 511 10thSt. NW. 202-347-4833. www. fordstheatre. org. $20-$62.
Question: Which of the following may attract kids most?
Options: (A) "The Boxtrolls." (B) "Awake and Sing!" (C) "Driving Miss Daisy." (D) "On Paper: Alternate Realities."

Ex Output:
A

Ex Input:
Article: American researchers have found that variations in a single gene can be used to predict if someone is likely to take their own life. Researchers at John Hopkins University, in Baltimore, Maryland, found that the gene SKA2 stopped functioning correctly in people at risk of suicide. The SKA2 gene is found in the prefrontal cortex of the brain, and is involved in preventing negative thoughts and controlling abnormal behavior. If there isn't enough SKA2, or it is changed in some way, the body cannot control levels of cortisol . Previous research has shown that people who attempt suicide or who take their own lives have large amounts of cortisol in their systems. A test could allow doctors or psychologists to place patients on "suicide watch" and disable their access to drugs or equipment which they could use to end their own life. The research was reported in The American Journal of Psychology. "We need to study this in a larger sample but we believe that we might be able to monitor the blood to identify those at risk of suicide. After all, suicide is a major preventable public health problem, but we have been stymied in our prevention efforts because we have no steady way to predict those who are at increased risk of killing themselves," says study leader Dr Zachary Kaminsky, an assistant professor of psychological and behavioral sciences. "With a test like ours, we may be able to cut down suicide rates by identifying those people and intervening early enough to head off a catastrophe ." The blood test managed to predict those with the most severe risk of suicide with 90 per cent accuracy. They could also spot if someone had already attempted suicide with 96 per cent accuracy, simply by looking at the levels of SKA2.
Question: What's the purpose of the blood test?
Options: (A) To predict people's characters. (B) To help cure those who lack SKA2. (C) To predict whether someone may attempt suicide. (D) To see whether people get infected by illness.

Ex Output:
C