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: A tent can be one of the more costly items on your camping equipment shopping list. It is definitely something that you need to consider carefully. By seeing a tent for real you will be able to get a better impression of its size and construction in the traditional shop. However,the _ is that,unless you are experienced,you may miss out some of the details that the manufacturer's promotional material makes clear. Cheap tents often look similar to the quality models they are mimicking ,but you can be sure that they use inferior materials and probably have lower design standards. Shop staff are often campers themselves. That means they usually can give lots of advice. If a shop assistant agrees with your own conclusions,that will be great;if they try to change your decision with a clear and reasonable argument,then that will be worth considering;if they just try to bamboozle ,or even bully,you then walk away. The Internet is a wonderful tool,and so long as you know how to make the most of search engines and put in a little effort,you really have the perfect answer waiting to be found. That answer will be different for every camper as each of us has different needs. Don't be surprised to see your favorite criticized somewhere,but if you see too much criticism,then you had better start thinking again. No problem. You won't have spent anything yet,so think of it positively as a large expense saved. Probably the best approach,if you have the time,is to research tents online and make a short list. Then try to inspect those tents at nearby shops. Then you can make a final decision on where to buy your chosen model based purely on total cost.
Question: You can make use of the Internet to _ .
Options: (A) meet your different needs (B) find the answer for every camper (C) help you out of trouble (D) find your favorite tent

Ex Output:
D

Ex Input:
Article: Some time ago, a friend of mine punished his three-year-old daughter for wasting a roll of gold wrapping paper. Money was tight , and he became infuriated when the child tried to decorate a box to put under the Christmas tree. Nevertheless, the little girl brought the gift to her father the next morning and said, "This is for you, Daddy." He was embarrassed by his earlier over-reaction, but his anger flared again when he found that the box was empty. He shouted at her loudly, "Don't you know that when you give someone a present, there's supposed to be something inside of it?" The little girl looked up at him with tears in her eyes and said, "Oh, Daddy, it's not empty. I blew kisses in the box. I filled it with my love. All for you, Daddy." The father was crushed. He put his arms around his little girl, and he begged her for forgiveness . My friend told me that he kept that gold box by his bed for years. Whenever he was discouraged, he would take out an imaginary kiss and remember the love of the child who had put it there. In a very real sense, each of us as parents has been given a gold container filled with unconditional love and kisses from our children. There is no more precious possession anyone could hold.
Question: Why did the father punish his daughter?
Options: (A) Because the girl had torn his favourite paper. (B) Because the girl was wasting a roll of gold wrapping paper. (C) Because the girl took the box under the Christmas tree away. (D) Because the father was in bad temper .

Ex Output:
B

Ex Input:
Article: When we can see well, we do not think about our eyes often. It is only when we can notsee perfectly that we come to see how important our eyes are. People who are nearsighted can only see things that are very close to their eyes. Many people who do a lot of close work, such as writing and reading, become nearsighted. Then they have to wear glasses in order to see distant things clearly. People who are farsighted face just the opposite problem. They can see things that are far away, but they have difficulty reading a book unless they hold it at arm's length. If they want to do much reading, they must get glasses too. Other people do not see clearly because their eyes are not exactly the right shape. This, too, can be corrected by glasses. Some people's eyes become cloudy because of cataracts . Long ago these people often became blind. Now, however, it is possible to operate on the cataracts and remove them. When night falls, colors become fainter to the eyes and finally disappear. After your eyes have grown used to the dark, you can see better if you use the side of your eyes rather than the centers. Sometimes, after dark, you see a small thing to one side of you, which seems to disappear if you turn your head in its direction. This is because when you turn your head, you are looking at the thing too directly. Men on guard duty sometimes think they see something moving to one side of them. When they turn to look straight at it, they can not see it any more, and they believe they were mistaken. However, this mistake happens because the center of the eye, which is very sensitive in daylight, is not as sensitive as the sides of the eye after dark.
Question: We don't know that our eyes are of great importance until _ .
Options: (A) we think about our eyes (B) we cannot see clearly (C) we wear glasses (D) we have to do much reading

Ex Output:
B