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: Stay-at home careers are the preferred way to earn a living for those who like to set their own hours and be their own boss, mothers of young children, and those who like to avoid office politics. There are plenty of opportunities to earn from home. Even if you earn little first, the quality of life should make up for the loss of income. Take a look at the following choices for home-birds: Online tutoring--You can earn anything from Rs 8,000 to 30,000 a month if you are a qualified teacher with computer and communication skills. The subjects in demand these days are math, English, physics, chemistry and biology. You can either teach part-time (4 hours) or full-time (9 hours). Freelance writers--You have a good writing skills but don't have time to work a nine-to-five job? You can still use your skills and earn a good amount of money. Many companies these days require good writers. One can earn up to Rs 8,000 to 50,000. Online-traders--Earn a lot of money by share trading. Just clear the NCFM (Capital Market) exam and you can start trading. You can bring in Rs 10,000 to 1000,000 per month. Designers--If you have the creative skills and a creative gift, try becoming a designer. Designers are required in different fields. One can earn nearly Rs 8,000 to 20,000 per month.
Question: According to the passage, those who likes stay-at-home careers _ .
Options: (A) perhaps can't earn as much as those working in an office (B) needn't do anything at home and earns a lot (C) can't be mothers who have children to look after (D) are often worried about office politics

Ex Output:
A

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: Passengers will be able to travel by train from Londonto Beijing in just two days on trains that travel almost as fast as airplanes under new plans from China. China is under discussion with 17 countries to build a high-speed rail network to India and Europe with trains that are able to run at over 200mph within the next decade. The network would eventually carry passengers from London to Beijing and then to Singapore. It would also run to India and Pakistan, according to Wang Mengshu, a member of the Chinese Academy of Engineering and a senior consultant on China's high-speed rail project. A second project would see trains heading north through Russia to Germany and into the European railway system, and a third line will extend south to connect Vietnam, Thailand, Myanmar and Malaysia. Mr. Wang said that the rail lines will draw together and open up the whole of Central, East and Southeast Asia, which would also allow China to transport valuable raw materials more efficiently. Mr. Wang said the route of the three lines had yet to be decided, but that construction for the South East Asian line had already begun in the southern province of Yunnan and that Burma was about to begin building its link. China has offered to supply money to the Burmese line in exchange for the country's rich reserves of lithium, a metal widely used in batteries. At present, the only rail line that links China to South East Asia is an old track built by the French in Vietnam a century ago. The Asian Development Bank has recently agreed a second PS27 million loan as part of the PS93 reconstruction of Cambodia's network, which should finish by 2013. The cost of the lines from Cambodia to Singapore and then from Vietnam to China could be roughly PS400 million.
Question: According to Wang Mengshu, the three rail lines aim to _ .
Options: (A) be finished in three years (B) match the speed of air travel (C) cover the whole area of Asia and Europe (D) increase efficiency in carrying goods and passengers

Ex Output:
D