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: With only two weeks to go before Christmas, buying presents is a lug priority for a lot of people. However, this year not so many people are leaving their homes to browse around the shops. These days lots of people do their shopping in the comfort of their own home with the help of the Internet. Online shopping is becoming more and more popular for a number of reasons: prices are often lower online, you don't have to queue up in busy shops and you can buy almost any product imagin- able with just a few clicks of your mouse. Computer trends are often man-dominated but this year women are expected to do more shop-ping on the Internet than men. It seems .that women are now more attracted to the convenience of on-line shopping than they used to be. Average spending online this Christmas by women will rise to $240 compared to the slightly lower average $233 for men, while the average spending per person on the high street is only $197. 70% of lnternet users, male and female, are now buying their Christmas gifts online. In the past a lot of people were unwilling to shop online. Many were worried about the security of entering their card details on the Intemet and the reliability of the Internet but as shopping; online has become more widespread, these worries have begun to disappear. 45% of Internet users still do have security worries but it hasn't slowed the ever-increasing numbers of online shoppers. One victim of the online shopping boom is the UK high street. Christmas trading can represent up to 60% of turnover for some stores. Many companies are concerned that not enough shoppers are coming through their doors in the run-up to Christmas. As a result there are lots of special offers in the shops. Most shops traditionally have sales after Christmas but this year the bargains have come early.
Question: Why don't people browse around the shops to buy Christmas presents thus year?
Options: (A) Because they don't have enough time. (B) Because Christmas is two weeks away. (C) Because they go shopping on the lnternet. (D) Because it isn't convenient for them to leave their houses.

Output: C

Input: Consider Input: Article: When policy experts debate climate change solutions, they often talk about "a price on carbon." They are arguing about whether companies should pay when they put carbon pollution in the air. Proponents say that it's simple economics -- if it's free to pollute, you'll get a lot of pollution. Opponents claim it will raise the cost of energy that's produced from high carbon sources, like coal. But here's the secret that most people seem to be missing: There already is a price on carbon, and it's paid by the taxpayers. Carbon pollution, like every other form of pollution, has an impact on the environment. Throwing waste into a river will cause the fish to die and the people who drink the water to get sick. And when you produce carbon pollution, you get climate change -- sea level rise, stronger storms, severe droughts, damage to agriculture, and more. All of those impacts cost money. Insurance rates go up when storms get more destructive. Taxes increase when cities have to rebuild bridges and roads. Military budgets go up when droughts and population changes cause conflicts. Not to mention impacts on agriculture and health care costs. In other words, the price on carbon is what we all pay when there is no market force to limit the pollution that causes climate change. So the debate is really about who will pay that price -- the companies who are making a profit from the fossil fuels, or the taxpayers who pick up the cost now? Right now, we have private profit and public cost. It's just like if we allowed every business to throw its garbage in the street because it's too expensive to have it moved away properly. Does it add a little bit to your dinner check to require that restaurants dispose of their trash properly? Sure. But it would be more expensive for you if the city had to clean the streets of their garbage every day. So just like we put a "price on garbage" we need a "price on carbon pollution." Now, a "price on carbon pollution" can mean a lot of things. You could tax companies based on the amount of carbon pollution they produce, and return the money to taxpayers. You could put a limit on how much they can produce, thereby requiring them to invest in ways to conduct business in a less polluting way.
Question: What do the policy experts argue about carbon pollution?
Options: (A) Whether the companies should pay for it. (B) Whether taxpayers could get profit from it. (C) Who have the ability to change it. (D) How much should be paid for it.

Output: A

Input: Consider Input: Article: For many years, I was convinced that my suffering was due to my size. I believed that when the weight disappeared, it would take old wounds, hurts and rejections with it. Many weight-conscious people also mistakenly believe that changing our bodies will fix _ . Perhaps our mistake is believing that being thin equals being loved, being special, and being cherished. We fantasize about what it will be like when we reach the long-awaited goal .We work very hard to realize this dream. Then, at last, we find ourselves there. But we often gain back what we have lost. Even so, we continue to believe that next time it will be different. Next time, we will keep it off. Next time, being thin will finally fulfill its promise of everlasting happiness, self-worth, and, of course, love. It took me a long time to realize that there was something more for me to learn about beauty. Beauty standards vary with culture. In Samoa a woman is not considered attractive unless she weighs more than 200 pounds. More importantly, if it's happiness that we want, why not put our energy there rather than on the size of our body? Why not look inside? Many of us strive hard to change our body, but in vain. We have to find a way to live comfortably inside our body and make friends with and cherish ourselves. When we change our attitudes towards ourselves, the whole world changes.
Question: The passage tries to stress the importance of _ .
Options: (A) body size (B) different beauty standards (C) culture difference (D) attitudes towards life
Output: D