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: We are much happier in our new house because it has a large garden, and you know how enthusiastic we both are about gardening. When we moved in a month ago, Mary wanted to get a dog to keep out burglars. However, we finally decided that it would be cheaper to put an iron grille in front of the door and get a burglar alarm. Last week, I went to a shop and bought an alarm for just over PS200. It consists of a control unit with three smaller units. I put the control unit in the lounge and put the other units in place by the front door, back door and lounge windows. That night I soon fell asleep because I was confident that no one could get into our house undetected. At about 1:50 a.m. I woke up suddenly and heard the siren. It was like an ambulance driving right through our bedroom. I couldn't leave the siren on all night. I went downstairs in the dark. When I reached the bottom of the stairs, I switched on the light and looked around. Oh my gosh. The back door was unlocked. I rushed to lock it and it was just at that exact moment that the 'burglar' disappeared behind a curtain. Guess what? It was an ordinary house lizard .Apparently the alarm system had been made for American or European homes in which lizards are never seen. I switched the alarm off and sat down to watch. A few moments later, a lizard ran across a wall, right in front of one of the alarm units. I won't bother to finish this story but if you'd like a burglar alarm system free of charge, just let us know.
Question: What do we know about the author and his wife?
Options: (A) They are pet lovers. (B) They love plants and flowers. (C) They are fond of catching lizards. (D) They hate technology.

Ex Output:
B

Ex Input:
Article: Different kinds of soil conservation methods are used by farmers to protect their land from damage by farming and the forces of nature. One important form of soil conservation is the use of windbreaks. Windbreaks are barriers formed by trees and other plants with many leaves. Farmers plant them in lines around their fields. Windbreaks stop the wind from blowing soil away. They also keep the wind from destroying or damaging crops. They are very important for growing grains, such as wheat. There have been studies done on windbreaks in parts of West Africa, for example. They found that grain harvests can be twenty percent higher in fields protected by windbreaks compared to fields without such protection. However, windbreaks seem to work best when they allow a little wind to pass through. If the wall of trees and plants stops wind completely, then violent air motions will take place close to the ground. These motions will lift soil into the air where it will be blown away. For this reason, a windbreak is best if it has only sixty to eighty percent of the trees and plants needed to make a solid line. There should be at least two lines in each windbreak. One line should be large trees. The second line, right next to it, can be shorter trees and other plants with leaves. Locally grown trees and plants are best for windbreaks.
Question: What is a windbreak according to the passage?
Options: (A) A windbreak is a concrete wall to prevent the strong winds. (B) A windbreak is a wood with different kinds of trees. (C) A windbreak is a wall of trees to hold soil in place. (D) A windbreak is a wall of wind to fight wind from the opposite way.

Ex Output:
C

Ex Input:
Article: Nearly 300 miles long, up to 18 miles across and 4000 vertical feet down, the 8th new wonder: the splendid Grand Canyon . Viewing its glory, President Theodore Roosevelt called the Grand Canyon "a natural wonder, ly unparalleled throughout the rest of the world". He urged Americans to preserve what he described as the "wonderful greatness, the nobleness, the great loneliness and the beauty of the canyon". More than a hundred years later, it's still easy to see why almost 5 million annual visitors call the Grand Canyon a wonder. The canyon stretches as far as the eye can see. Some 5 or 6 million years ago, the Colorado River rushed through this land, carving out the massive canyon we see today, exposing even older layers of rock previously buried. Geologists say some are 2,000 million years old. Native Americans were the first people to make these rocky walls as their homes about 12,000 years ago. Today the Hualapi and Havasupai Indians live deep in the canyon, balancing age-old traditions with modernity. There are no roads to this village; mules carry the mail here. But at the same time, the tribes are designing a skywalk that promises an excellent view over the canyon early next year. The bald eagle, wild and endangered American icon is another longtime resident of the Grand Canyon.
Question: President _ sang high praise for the Grand Canyon.
Options: (A) Bush (B) Clinton (C) Roosevelt (D) Washington

Ex Output:
C