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.

Article: Could cities that float on the sea solve the problems caused by floods and provide food for the world? Some scientists think so. The idea is already being tested and they believe that floating citied will provide more homes for a growing population, without having to use land needed to grow food. And they believe floating areas will allow more food to be grown, so that no one in the world is hungry. In some places, cities that float on the sea are already being planned, A company in the Netherlands called DeltaSync thinks that sea cities will save the world, with more than one in ten people living in them. They say sea cities solve many of the problems the world faces in the 21st century, like not having enough land , more and more people needing homes, fossil fuels running low and the increasingly serious problems caused by floods. DeltaSync says building in the desert is not possible because there is no enough water and that developing ways for people to live in space is still too expensive. So they believe the answer is our oceans, which cover over two thirds of the Earth's surface. Their plans for floating areas include using algae to produce fuel and food. More than a quarter of the land in the Netherlands already lies underwater and scientists there have spent years trying to find ways to deal with it. In the city of Rotterdam they already have floating homes. Bart Roeffen from DeltaSync says: "We have plans for neighbourhoods including roads and, in the end, I believe we can build floating cities on the sea."
Question: DeltaSync is a company that wants to build cities _ .
Options: (A) on land (B) in space (C) on the sea (D) in the desert
C

Article: Of all the famous English writers, probably the best known is William Shakespeare. He was born in Stratford-upon-Avon in 1564 on April the 23rd. His father was an important man in town so Shakespeare had a good upbringing. Shakespeare probably went to school (although no records survive to prove this) but not university. He got married when he was 18 to Anne Hathaway and the couple had 3 children. Shakespeare wrote 38 plays and 154 sonnets (a sonnet is a kind of poem). He began working in his home town of Stratford but by 1592 was writing in London. He became rich enough to buy a house in the capital and one in Stratford. He wrote sad stories called tragedies, like Romeo and Juliet, funny stories or comedies, romantic stories and stories about historical figures such as Julius Caesar. Shakespeare died on his birthday in 1616, almost 400 years ago. But why is his work still popular today? His work looked at common human themes, such as betrayal, murder, lust, power, ambition and love. These themes are as much a part of human nature today as they were all those years ago and are the themes we see in modern soap operas and Hollywood films. Even though his theatre, The Globe, burned down in 1613 it was rebuilt in London in 1997 and you can still see his plays performed there today. Shakespeare's influence on the English language can still be felt today. We talk about "fair play", meaning honest behaviour but this phrase was first used by Shakespeare. He coined the phrase "you can have too much of a good thing". And it was Shakespeare who came up with the expression to disappear "into thin air" which we still use today when we lose something. Shakespeare's work has been translated into every major language in the world. And perhaps we'll still be as fascinated by his work 400 years from now as we've been for the last 400.
Question: How old was Shakespeare when he died?
Options: (A) 18. (B) 28. (C) 49. (D) 52.
D

Article: Maybe you've just invented something better than the iPhone or a solar-powered car. You don't want anyone to steal your design. What should you do? Patent it! Patents are the best way to get credit for your work and help others continue advancing in that field. Here's what you need to know. A patent gives you the right to an invention. The patent protects its owner, which means the invention can't be copied or sold without their agreement. In exchange, the owner must reveal information about the invention. This contributes knowledge that helps other inventors improve on their own research. A patent usually lasts about 20 years. The first step to getting a patent is the application. The person applying must name the invention, explain its use and describe it clearly. The invention must be practical and contain some new characteristic -- something that hasn't been seen or used before. But not everything "new" can be patented. Many countries don't allow patents on things like new concepts, scientific theories, medical procedures or substances already found in nature. You may not be able to see patents, but they're connected to nearly everything. There are patents on things you use every day, like plastic, medicine and your computer. There are patents on things that are unavailable on the market, too. Apple is well-known for its patents on potential products, such as the "iBike" or the "iKey". Of course there are also patents on inventions like this. Take the anti-eating face mask for example. This _ locks around your head with a metal cage covering your mouth. You can breathe and speak, but you can't eat! Although many patented inventions can be failures, there's plenty of room for success. So if you have a cool invention, try to patent it.
Question: Which of the following is NOT true according to the text?
Options: (A) A patent can last for around 20 years. (B) Everything new can be patented. (C) Your invention is protected after you have applied for a patent. (D) Some patents are on the things that we use every day.
B