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: There was great excitement on the planet of Venus this week. For the first time Venusian scientists managed to land a satellite on the planet Earth, and it has been sending back signals as well as photographs ever since. The satellite was directed into an area known as Manhattan (named after the great Venusian astronomer Prof. Manhattan, who first discovered it with his telescope 20 000 light years ago).Because of excellent weather conditions and extremely strong signals, Venusian scientists were able to get valuable information as to feasibility of a manned flying saucer landing on Earth.A press conference was held at the Venus Institute of Technology. "We have come to the conclusion,based on last week's satellite landing," Pro. Zog said,"that there is no life on the Earth." "How do you know this?" the science reporter of the Venus Evening Star asked. "For one thing, Earth's surface in the area of Manhattan is composed of solid concrete and nothing can grow there. For another, the atmosphere is filled with carbon monoxide and other deadly gases and nobody could possibly breathe this air and survive." "What does this mean as far as our flying saucer program is concerned?" "We shall have to take our own oxygen with us, which means a much heavier flying saucer than we originally planned. " "Are there any other hazards that you discovered in your studies?" "Take a look at this photo. You see this dark cloud floating over the surface of Earth? We call this the Consolidated Edison Belt. We don't know what it is made of, but it could give us a lot of trouble and we shall have to make further tests before we send a Venus Being there." "If what you say is true, won't this set back the flying saucer program several years?" "Yes, but we shall proceed as soon as the Grubstart gives us the added funds." "Prof. Zog, why are we spending billions and billions of zilches to land a flying saucer on Earth when there is no life there?" "Because if we Venusians can learn to breathe in an Earth atmosphere, then we can live anywhere."
Question: During the week of great excitement the Venusian scientists succeeded in getting important information on whether they can _ .
Options: (A) land a satellite with Venus astronauts on Earth (B) make a firstrate flying saucer (C) get a Earth Being to Venus (D) direct a flying saucer into Manhattan

Ex Output:
A

Ex Input:
Article: 1826, a Frenchman named Niepce needed pictures for his business .But he was not a good artist.So he invented a very simple camera .He put it in a window of his house and took a picture of his garden .That was the first photo. The next important date in the history of photography was 1837. That year, Daguerre, another Frenchman, took a picture of his studio. He used a new kind of camera and a different processs. In his pictures, you could see everything very clearly, even the smallest details. This kind of photograph was called a daguerreotype. Soon, other people began to use Daguerre's process. Travellers brought back daguerreotypes from all around the world. People photographed famous buildings, cities and mountains. In about 1840, the process was improved. Now photographers could take pictures of people and moving things. The process was not simple. The photographers had to carry lots of film and processing equipment. But this did not stop the photographers, especially in the United States, where from the 1840s daguerreotype artists were popular in most cities. Mathew Brady was a well-known American photographer. He took many pictures of famous people. The pictures were unusual because they were very life-like and full of personality. Brady was also the first person to take pictures of war. His 1862 Civil War pictures showed dead soldiers and ruined cities. They made the war seem more real and more terrible In the 1880s, new inventions began to change photography. Photographers could buy film readymade in rolls. So they did not have to make the film immediately. They could bring it back to their studios and develop it later, meaning that they did not have to carry lots of equipment. And finally, the invention of the small handheld camera made photography less expensive. With the small camera, anyone could be a photographer. People began to use cameras just for fun. They took pictures of their families, friends and favourite places. They called these pictures "snapshots". Photographs became very popular in newspapers in the 1890s. Soon magazines and books also used documentary photographs. These pictures showed true events and people. They were much more real than drawings. Photography had turned into a form of art by the beginning of the 20th century. Some photographs were not just copies of the real world. They showed ideas and feelings, like other art forms.
Question: The passage is mainly about _ .
Options: (A) the invention of cameras (B) a kind of new art -- photography (C) the development of photography (D) the different uses of cameras in history

Ex Output:
C

Ex Input:
Article: A lot of small business owners put themselves in _ in their own companies.Consider this scene:the company owner who has thirty individuals working for him in the business does all the work. Stop the actual wrong belief that you're the only one who can do the JOB! You are an individual. _ .The best way to replace yourself is not through someone else,but with a System! A system or program doesn't always make reference to something high-tech.It's more about the actual administration process flow that gets issues running smoothly. Systemizing your business is vitally important for the success of the company.About 80%of what's completed in your business can be systemized.Take a moment to determine all of the routine things that are done in your company.Now record the best way to achieve these duties. However,creating systems isn't enough.You have to ensure that the methods are simple to follow,and easy to complete.If you do not allow it to be easy,it won't be done,or at best it won't be consistent. With systems and processes in position.it's simply using a few people to operate individual systems.A great number of companies that possess established systems have made great achievements through the years.Burger King is a good actual life example. To construct a great business,replace yourself with a good program right now!
Question: Which of the following is true about"A system"?
Options: (A) It can deal with a11 the routines in the business. (B) It is simple to follow or complete a system. (C) Your company will be successful so long as you have a system. (D) It will help a company run smoothly.

Ex Output:
D