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.

[Q]: Article: Last week, I bought an alarm system for about $ 450. It consisted of a control unit with three other small units. I put the control unit in the sitting room and fastened the other units by the front door, back door and living-room windows. The instructions told us to choose three numbers, so we chose 491, the last three numbers of our telephone number. Now I must explain how the alarm works: 1. There is a power siren in the control unit. It makes a very loud noise. 2. Each of the small units sends out beams or rays in different directions. If anything moves, it breaks a beam. This sends a signal to the control unit. The siren makes a noise that you can hear 50 meters away. 3. When we go to bed, I press the three buttons numbered 4, 9 and 1. Then we have 30 seconds to get out of the room before the alarm starts to work. That might I slept soundly because I was sure that no burglar could get into our house. However, at about 2:10a.m., I woke up and heard the siren . "There must be a burglar in the house," Mary said. "What shall we do?" "I'll go and see who's there," I said. "Stay here. Don't make a noise." I went downstairs quietly. When I reached the living room, I switched on my torch and looked round the room. Then I turned the light on. I switched the siren off and searched the rooms downstairs. There was nothing wrong except that the back door was unlocked. I locked it, re-set the alarm and went back to bed. About an hour later, the alarm started again. I jumped out of bed, fell over a chair in the dark and bumped into the bedroom door. Mary woke up and started hitting me with a torch. "Hey! Wait a minute!" I whispered. "It's only me. I' m going downstairs to see what's wrong." I went down into the living room and listened for a moment. The only sound I could hear was the siren. I turned on the light and then switched the siren off. As I did so, I glanced across at the curtains in front of the windows. I saw a house lizard disappear behind the curtains. "Oh!" I said to myself. "That's our burglar." When the lizard moved, it started the siren. I guessed that the alarm had been made in Europe, where there are no house lizards. Well, I won't finish this story but if you want an alarm system free of charge, let me know. I'll send you ours. We bought a dog this morning. It knows the difference between a lizard and a burglar.
Question: The writer bought an alarm system to _ .
Options: (A) make sure that he got up early every day (B) warn him when there were lizards in his house (C) frighten burglars and tell him that somebody had got into the house (D) make Mary feel safe to live in the large room
[A]: C

[Q]: Article: My first reaction was annoyance. It was Friday afternoon, and I was within an hour of finishing my work for the week. As I was leaving, a nurse brought me one more patient message. The statement read: "Mm. Jones called to say that she has had blurred vision ever since her medical test this morning. " I smiled. Suddenly our tests were causing eye problems. This week my patients had questioned everything. My patient with high blood pressure had stopped coming to her treatment on the advice of an Internet chat room. A woman who had a mental problem was substituting (......) St. John' s word for her medication. Now Mrs. Jones was imagining problems. I rolled my eyes. My second reaction was worry. As I looked through her record, I tried to figure out why she would have blurred vision, but nothing in her record explained the new problem. She' s probably just anxious, I thought. Still, she wouldn't have called if she had been all right. I picked up the phone. What 1 next felt can only be described as delight. Before I made the call, the nurse ran in: Mrs. Jones called. Her vision is fine. Turns out she picked up the wrong glasses when she left the office. The X-ray technician has been having the same problem. I let out a lugh. Mrs. Jones had been right. Her vision had been blurred. Now we know why. Finally I felt shame. I came to realize what Mrs. Jones had taught me. I had first known she was wrong, that her anxiety had _ . Instead, my medical training had clouded mine. Now I feel thankful that Mrs. Jones figured it out before I made a mistake about our relationship. Patients come to me for my help. They pay me to listen, diagnose , treat and talk. That suggests trust; I must remember that, and trust them too.
Question: The writer smiled while reading the patient message because he knew _ .
Options: (A) Mrs. Jones would ask for more tests (B) the patient was being unreasonable (C) the nurse was joking with him (D) Mrs. Jones would call him
[A]: B

[Q]: Article: When we look at the sky and see a bright light moving quickly across it or coming towards the earth, we talk about seeing a "shooting star" or a "falling star". These moving lights are not, in fact, stars at all. They are small pieces of matter from outer space, which burn up as they enter the Earth's atmosphere. The correct name of them is meteoroids. Any pieces that make it to the Earth's surface without completely burning up are known as meteorites. A meteor is actually the name given to the light we see when a meteoroid is burning up. When a meteorite hits the Earth at speeds between 11 and 72 kilometers a second, it can do amazing damage. A very large meteorite could knock the earth out of its orbit. If this happened, all life on Earth would probably become extinct . The path we follow around the Sun would change and as a result the Earth would become either much hotter or much colder. This change in temperature would affect sea levels and the amount of water in rivers. There would either be huge floods, which would cover most of the land with water, or the oceans would dry up and there would be a drought, which means a long period of time without rain. Either way, nothing could survive. If a large meteorite landed in the sea it would almost certainly cause tsunamis, which would race towards the land, destroying everything in their paths. Although it is unlikely the Earth will be struck by a meteorite large enough to do that kind of damage, there is evidence of fairly large meteorites hitting the Earth in the past. In 1908 a large area of forest in Tunguska, Siberia was destroyed by a meteorite that came apart just before it hit the ground. The moon, however, has about three billion craterscaused by meteorites impacting its surface. The reason more meteorites have reached the surface of the moon than the surface of the Earth is that the moon does not have enough atmosphere for the meteorites to burn up in. some of the meteorites that have reached the Earth's surface have done considerable damage. Some scientists believe it was a change of climate caused by meteorites hitting the Earth that resulted in the extinction of the dinosaurs and other large prehistoric animals. Scientists are especially interested in meteorites because they contain information about the solar system. It is widely believed by scientists that most meteorites are produced by collisions between asteroids (small planets). These collisions probably happened many billions of years ago. This means the physical and chemical structure of a meteorite can give scientists information about the early days of the universe.
Question: The story is about _ .
Options: (A) floods caused by meteors (B) matter from outer space (C) life on Earth millions of years ago (D) meteorites that have damaged the moon
[A]:
B