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.

Let me give you an example: Article: Homework can put you in a bad mood , and that might actually be a good thing. Researchers from the University of Plymouth in England doubted whether mood might affect the way kids learn. To find out the answer, they did two experiments with children. The first experiment tested 30 kids. Someshapes were hidden inside a different, larger picture. The kids had to find the small shapes while sitting in a room with either cheerful or sad music playing in the background. To test their mood, the scientists asked the kids to point to one of five faces, from happy to sad. Children who listened to cheerful music tended to point to the smiley faces while the others pointed to the unhappy ones. The researchers found that sad kids took at least a second less to find the small shapes. They also found an average of three or four more shapes. In the second experiment, 61 children watched one of two scenes from a film. One scene was happy, and the other was sad. Just like in the first experiment, kids who saw the sad scene acted better compared to the others. The researchers guessed that feeling down makes people more likely to focus on a problem or difficult situation. Not all scientists agree with them, however. Other studies argued that maybe, that cheerful music in the first experiment distracted kids from finding shapes. While scientists work on finding out the answers, it still might be wise to choose when to do your tasks according to your mood. After eating a delicious ice cream, for example, write an essay.
Question: Researchers did experiments on kids in order to find out _ .
Options: (A) how they really feel when they are learning (B) whether mood affects their learning ability (C) what methods are easy for kids to learn (D) the relationship between sadness and happiness
The answer to this example can be: B
Here is why: It is clearly mentioned in the article that to the check effect of mood on children is the main purpose of the experiment. So, B is the correct answer.

OK. solve this:
Article: Undersea restaurant Ithaa Ithaa is the very first undersea restaurant in the world located 5 meters below sea level in the Republic of Maldives. The 5-by-9-metre restaurant can hold 14 people at a time and has a transparent roof offering a 270 panoramic underwater view. The restaurant was designed and constructed by M. J. Murphy Ltd., a design consultancy based in New Zealand. It was opened on April 15, 2005. Food served in the restaurant can be described as contemporary European with Asian influence. Tip: Work on technical designs and drawings for Ithaa started in March 2004. Once constructed, Ithaa would be put into the water. Because of technical challenges, limited resources, and quality control problems in building something underwater, the restaurant can only exist for about 20 years. Skyline Queenstown Restaurant The famous New Zealand restaurant offers delightful fresh seafood, salads, roast meats and delicious desserts, while the panoramic view from the windows will attract you day or night. It' s the ideal place for that special night out and the best place in Queenstown to watch the sun go down! With live music creating a relaxing atmosphere and never ending scenery to admire, you will be entertained as you eat in the restaurant. Tip: Unlike other restaurants, the Skyline Queenstown Restaurant has tiered seating to guarantee beautiful lake and mountain views from every table. Revolving Restaurant Allalin Located in the Allalinhom mountain, Saas-Fee, Switzerland, Revolving Allalin is the highest revolving restaurant in the world at about 3,500 m. The restaurant offers a rich selection. Valaisian platter, pasta and pizza ... all this and much more is on the menu of the world-famous restaurant. Enjoy the eating delights offered in the world's highest revolving restaurant, while some mountain tops slowly pass by. Tip: Known as the 'Pearl of the Alps', Saas-Fee offers many sports and activities: The popular holiday village features the Metro Alpine, the highest underground railway in the world up to the skiing area and the highest revolving restaurant at 3,500 m.
Question: What do we know about Ithaa?
Options: (A) It was constructed in New Zealand. (B) It will exist for another 20 years. (C) It was finished in March 2004. (D) It can seat 14 diners at most.
Answer:
D