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: Gauri Nanda sees a wearable computer as a handbag -- one that's built out of four-inch squares and triangles of fiber, with tiny computer chips embedded in it. It looks, feels and weighs like your typical leather purse. That's where similarities end: This bag can wirelessly keep track of your belongings and remind you, just as you're about to leave the house, to take your wallet. It can review the weather report and suggest that you grab an umbrella. This purse can even upload your favorite songs onto your scarf. Sure, a computing purse and scarf set may seem like the stuff of science fiction. But these devices, part of next generation of wearable computers, could become commonplace within a few years. DuPont created new super strong fibers that can conduct electricity and can be woven into ordinary-looking clothes. And the chipmaker developed chip packaging allowing wearable computers to be washed, even in the heavy-duty cycle. As a result, these new wearable devices are different from the heavy and downright silly versions of the recent past, which often required users to be wrapped in wires and type on their stomachs. Unlike their predecessors, these new wearable computers also make economic sense. When her bag becomes commercially available in two to three years, Nanda expects it will cost around $150, which is the price of an average leather purse. Here's how the bag works: You place a special radio-signal-transmitting chip on to your wallet. A similar radio in your purse picks up the signal and notifies you that you've forgotten to take your wallet. In turn, sensors on your purse's handles will notify the computer that you've picked up the purse and are ready to go. _ Indeed, more people will want to cross that bridge in the coming years -- making for a booming market for wearable computers that don't like something out of science fiction.
Question: Which of the following describes a wearable computer?
Options: (A) It can be washed in a washing machine. (B) It is much heavier than a leather purse. (C) It can download songs from the Internet. (D) It is made of clothes conducting electricity.

Ex Output:
A

Ex Input:
Article: Every child has written their names on the beach at some point. But whereas most people's "handwriting" is washed away, one super-rich Arab sheikh has ensure that his graffiti will last a little longer. Hamad Bin Hamdan Al Nahyan, 63, has scrawled his name in sand on an island he owns with letters so big that they be seen from space. The word "HAMAD" measures 1,000 meters high and is a staggering two miles long from the "H" to the "D" on the Al Futaisi Island. And rather than allow the writing to be washed away by the ocean, the letters actually form waterways that absorb the encroaching tide. The ruler's name is even visible on Google's map service. Hamad dreamed up the idea and had his workmen work hard for weeks to craft the enormous piece of sand graffiti. It is not known how much it cost to make. However, the sheikh boasts a personal fortune second to the Saudi king's. Hamad, also known as the "Rainbow Sheikh", is a member of the Abu Dhabi Ruling Family. He is understood to have some 200 cars including seven Mercedes 500 SELs painted in different colors of the rainbow which he stores in a giant pyramid. The Arab sheikh had a taste for doing things on a large scale. He built the world's largest truck--eight times the size of the Dodge Power Wagon, with four bedrooms inside the cabin. Hamad constructed a motor home in the shape of a giant globe which is exactly 1 millionth the size of the actual earth. Alongside his displays of wealth he has become a well-known philanthropist in medicine and supplied a complete Kinney stone operating theatre to a public hospital in Morocco where he continues to fund its stuff.
Question: Which of the following in NOT true according to the passage?
Options: (A) Hamad is a man who wants himself to be well-known from apace. (B) Hamad is a super-rich person who always does something unusual. (C) Hamad is a man who is always so mean in his family (D) Hamad is a man who boasts his fortune is second to the Saudi king's

Ex Output:
C

Ex Input:
Article: This year some twenty-three hundred teenagers (young people aged from 13-19) from all over the world will spend about ten months in U. S. homes. They will attend U.S. schools, meet U.S. teenagers, and form impressions of the real America. At the same time, about thirteen hundred American teenagers will go to other countries to learn new languages and gain a new understanding of the rest of the world. Here is a two-way student exchange in action. Fred, nineteen, spent last year in Germany with George's family. In turn, George's son Mike spent a year in Fred's home in America. Fred, a lively young man, knew little German when he arrived, but after two months' study, the language began to come to him. School was completely different from what he had expected-much harder. Students rose respectfully when the teacher entered the room. They took fourteen subjects instead of the six that are usual in the United States. There were almost no outside activities. Family life, too, was different. The father's word was law, and all activities were around the family rather than the individual . Fred found the food too simple at first. Also, he missed having a car. "Back home, you pick up some friends in a car and go out and have a good time. In Germany, you walk, but you soon learn to like it." At the same time, in America, Mike, a friendly German boy, was also forming his idea. "I suppose I should criticize American schools", he says. "It is far too easy by our level. But I have to say that I like it very much. In Germany we do nothing but study. Here we take part in many outside activities. I think that maybe you schools are better in training for citizens. There ought to be some middle ground between the two."
Question: This year _ teenagers will take part in the exchange programme between America and other countries.
Options: (A) over three thousand (B) thirteen hundred (C) twenty three hundred (D) less than two thousand

Ex Output:
A