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.
One 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
Solution is here: B
Explanation: 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.

Now, solve this: Article: Discover Artistic Talents across the Country Tank Loft, Chongqing This 12,000-square-meter art center was established on the site of a used military tank warehouse . It is the largest contemporary art base in western China, featuring modern exhibition, galleries, design studios and art bookstores. The art zone is located on the campus of the Sichuan Fine Arts Institute and was created by the school in the early 2000s. Where: No. 108 Huangjueping Center Street, Jiulongpo District, Chongqing Opening hours: 9 am--5 pm (closed Mondays) Redtory, Guangzhou Redtory, established in 2009, is a spacious art district often referred to as Guangzhou's 798. Made up of more than 30 old halls, mostly buildings of red brick, the place was originally built in 1956 as Chinese largest can factory. Some of the rusty machines from the old factory have been kept as art equipment, giving the zone an old charm. Where:No. 128 Yuancun Siheng Road, Tianhe District, Guangzhou Opening hours:Mon.-Sun. 10:30 am-9 pm M50, Shanghai M50, also known as 50 Moganshan Road, is the center of Shanghai's contemporary art scene, with more than 100 artists whose studios are open to the public. This district, on the bank of Suzhou Creek, was previously a textile factory until it seized production in 1999. Xue Song, a Shanghai artist, was the first to establish a studio there in 2002. Where: No. 50 Moganshan Road, Pudong District, Shanghai Opening hours: 10 am-5 pm (closed Mondays) 798 Art Zone, Beijing Attracted by ordered designing, convenient traffic and unique style of Bauhaus architecture, art organizations and artists have crowded in the vacant plants and transformed them since 2001, gradually forming a district gathered galleries, art studios, cultural companies, fashion shops etc. As the earliest area where the organizations and artists moved in located in the original area of 798 factory, this place was named as Beijing 798 Art Zone. Where: No. 4 Jiuxianqiao Road, Chaoyang District, Beijing. Opening hours: 10 am-6 pm 
 Question: If you are going to visit an art zone at 7pm, which one can you go to? 
 Options: (A) Tank Loft, Chongqing. (B) Redtory, Guangzhou. (C) M50, Shanghai. (D) 798 Art Zone, Beijing.
Solution:
B