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.

Example Input: Article: There are many differences between British English and American English.I used to teach a course about the differences between the two.We speak English on both sides of the Atlantic Ocean but we have many differences in our common language.We have examples of the same words having very d ifferent meanings,differing spellings of the same words as well as completely different words for the same things.Here are some examples. A cookie in the US is called a biscuit in the UK.A biscuit in the US is a small cake in the UK.Crisps in the UK,are known as chips,but we British people eat a plate of chips that you call fries in the US.In the UK,a pie can be made from either meat or fruit,while in the US pies are normally made from fruit;pot pies are made from meat.Most things are measured in grams and kilograms in the US,not pounds and ounces. One very obvious difference is the side of the road we each choose to drive on.Petrol in the UK is gas in the US.The place where we fill up our cars,in the UK,is a garage;while in the US,it's a gas station.The term garage is also used as a place to store your car next to or close by your house.In the UK we call a lorry what is known as a truck in the US. An elevator in the US is called a lift here,and the first floor in the US,is calle d the ground floor here,so many visitors get off on the wrong floor in British hotels. I could continue with this. There are countless examples of differences within our one shared language.With so many differences,no wonder it's hard to understand each other well.
Question: The passage is mainly about the differences between British English and American English in _ .
Options: (A) vocabulary (B) grammar (C) sound (D) spelling
Example Output: A

Example Input: Article: The round-the-clock availability that cell phones have brought to people's lives may be _ amily life, a new study suggests. The study, which followed more than 1300 adults over 2 years, found that those who consistently used a mobile phone through out the study period were more likely to report negative "spillover" between work and home life--and, in turn, less satisfaction with their family life. Spillover(,) actually means that the line between work and home began to become unclear. Work life may invade home life--when a parent is taking job-related calls at home, for instance--or family issues may start to take up work time. For example, a child may call Mom at work, telling her "the microwave exploded", explained Noelle Chesley, an assistant professor of society at the University of Wisconsin Milwaukee and the author of the study. The problem with cell phones seems to be they are allowing for ever more spillover between work and home. This may be especially true for working women, the study found. Among men, consistent use of mobile phones seemed not to allow more work issues to creep into family time. But for women, the spillover tended to go in both directions--being "connected" means that work cuts into home time, and family issues come into work life. Cell phones seem to be opening more lines for stressful exchange among family members. But there may be ways to control the spillover, according to Chesley. Employers, she said, should look at their policies on contacting employees after working hours to make sure their expectations are "reasonable". For their part, employees can decide that cell phones go off during family time, Chesley said.
Question: What is the main idea of this passage?
Options: (A) Cell phones offer 24-hour availability. (B) Cell phones get life and work mixed. (C) Women don't use cell phones in an effective way. (D) Men are better at dealing with family problems.
Example Output: B

Example Input: Article: I was doing my last-minute Christmas shopping in a toy store, looking at fashion dolls. A nicely-dressed little girl with her father was excitedly looking through the same dolls as well. As she was looking, a boy wandered in and sorted through some of the video games. He was dressed neatly, but in clothes that were obviously rather worn. He, too, had money in his hand, but it seemed to be no more than five dollars or so at the most. He was with his father as well, but each time he picked one of the video games and looked at his father, his father shook his head. The little girl had apparently chosen her doll, a beautifully-dressed glamorous creation that would have been the envy of every little girl on the block. However, she stopped to watch the little boy and his father. Then, the little girl put her carefully-chosen doll back on the shelf, and ran over to the video games. She excitedly picked up one that was lying on top of the other toys and raced towards the reception desk after speaking with her father. I picked up my purchases and waited in line behind them. Then, much to the little girl's obvious delight, the little boy and his father stood behind me. After the video game was paid for and bagged, the little girl handed it back to the cashier and whispered _ in her ear. The cashier smiled and put the package under the counter. I paid for my purchases and was rearranging things in my purse when the little boy came up to the cashier. The cashier rang up his purchases and then said, "Congratulations, you have been selected to win a prize!" With that, she handed the little boy the video game, and he could only stare in disbelief. It was, he said, exactly what he had wanted! The little girl and her father were standing at the door-way during all of this, and I saw the biggest, prettiest smile on that little girl's face that I have ever seen in my life.
Question: Which of the following is TRUE according to the passage?
Options: (A) The little boy got the video game because he was selected to win the prize. (B) The little girl chose the video game as her present. (C) The little girl chose the video game as well as the doll as her presents. (D) The little boy was too surprised to believe what had happened in the end.
Example Output:
D