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: Americans are buying more products and services than ever before through the Internet, and the popularity of online sales is likely to spread to other countries. Online sales now represent as much as one-tenth of all retail sales in the United States,which has led traditional stores to seek new ways to keep their customers loyal. Lynne Shaner used the Internet to buy everything she needed for her wedding and holiday gifts for her husband. Other than food, 90 percent of her purchases were made on her home computer. "I find that, by being able to go online and _ the things that I need to select and have them delivered to me right at my doorstep, I'm free from all the driving, all the crowds, all the noise, and I usually get a better selection." There are a lot of people like her. Experts say American online shopping hit records in both November and December. Fifty-seven percent of Americans have bought something electronically. Store owners worry that this growing amount of online sales will hurt their business. Cornell University marketing professor Ed McLaughlin says, "They should be worried. Anything that can move online will be sold online. And it's just a matter of time. However, traditional stores can keep their customers by selling goods like clothing, which buyers may want to see and try on before purchasing. The stores could also offer things that are difficult to ship. " Bill Martin, whose business helps stores learn about their customers, says, "Traditional stores offer a social experience that some people enjoy. There is still a lot of emotion in the buying decision that takes place, and you can't always get that on-line. It's a rather cold process. Traditional stores can provide goods for buyers more quickly than online stores. And some retailers are using websites to persuade people to visit their stores. " While online shopping worries some business owners, the only worry for delivery services like FedEx and UPS is keeping up with the number of packages. UPS Manager Dana Kline says her company is very busy at this time of year. UPS is so busy that it has filled 55,000 temporary worker positions during the holiday season.
Question: According to Lynne Shaner, shopping online _ .
Options: (A) helps choose things she needs most (B) will replace traditional shopping soon (C) offer many benefits to customers (D) seldom provides a better selection

Ex Output:
C

Ex Input:
Article: There are robots all around us. Some do very complicated jobs like flying airplanes and driving subway trains. and some do one simple job. When an automatic washing machine is switched on, water pours in. The machine waits until the water is warm enough for washing clothes. It does this by "feedback" . Information about what is happening is feedback into the robot to tell what to do next. Our eyes, ears and other senses are our feedback. They tell us what is going on around us. So robots are like human beings in two ways. They work and they have feedback. In some ways robots are better than human beings. They work quickly and do not make mistakes. They do not get bored doing the same job over and over again. And they never get tired. So robots are very useful in factories. They can be taught to do many different jobs. First their electronic brain must be shown how the job is done. A person moves the robot's "arms" and "hands" through each part of the job. The most intelligent robots can move and see. Their eyes are cameras. Their fingers can feel shapes and sizes of the objects. These robots have computer brains linked to their eyes and fingers, which control their actions. The expensive robots are used in scientific research. They do such job as handling radioactive materials.
Question: In this passage the author tells us that _ .
Options: (A) robots are very popular (B) there are various kinds of robots (C) we see robots only at certain times (D) robots can be easily controlled

Ex Output:
A

Ex Input:
Article: How's your relationship with your dad? It can be easy to let walls build up between you during the teen years. But by taking several simple steps, you can help improve the relationship between the two of you--even without great efforts. Here are a few quick tips. Talk it out. Communication is key to any friendship. Open your mouth and let your dad know what's on your mind. Give him a chance to get to know you. Listen up. Your dad's lived more life than you have. Believe it or not, he's probably been there and can help you get through the pressures and struggles. Ask how he dealt with school, girls or temptations . Then pay attention. Take some time. It can be hard for us kids to talk about what really matters. But spending time together can build the relationship, and create chances to talk. Go for a hike or a game. Work on the car. Whatever you're into, ask your dad to do it together. Fight fair. Family disagreements are unavoidable. _ , keep your mouth respectful and cool off before you say something bad. Talk it out when you can do so calmly. Realize respect. Face it: your dad's been given authority to help guide you as you know. He's going to make mistakes, but so are you. Forgive him when he blows it, and honor his decisions--even if you don't agree.
Question: The main purpose of the passage is to advise teenagers on how to _ .
Options: (A) respect and obey their fathers (B) communicate with their fathers (C) ask their fathers for advice (D) get along well with their fathers

Ex Output:
D