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.

Example Input: Article: To most of us,school means classes,teachers,schedules,grades,and tests.But for the children at Sudbury Valley School in Massachusetts,school is very different. Firstly,there are no lessons.All the children,aged between 4 and 19,do whatever they want.There are no teachers--only "staff members".The idea behind this is that you do not need to make children learn,because children want to learn anyway."You do not need to say to a three yearold,'Go explore your environment.'You can't stop them!" says Daniel Greenberg,a founder of the school."But if you make children do what you want all day,they will lose all taste for learning." At Sudbury Valley School,you will permit children to talk,read,paint,cook,work on computers,study French,play the piano,climb trees or just run around.Two boys spent three years just fishing! The other way that Sudbury Valley School is different is that the children can decide the rules.Every week,there is a school meeting where both children and staff have one vote each--even the fouryearolds.They decide the school rules,how to spend the school budget,and even which staff they want and do not want any more. When the school first opened in 1968,people said it would never work.But today,the school has 200 students,and 80%of its students go on to college. Even the two boys who went fishing all the time have successful careers today.One of them is a musician and the other is a computer scientist.
Question: What is the main topic of the article?
Options: (A) An unusual school. (B) Children's hobbies. (C) A school without rules. (D) Education in the US.
Example Output: A

Example Input: Article: Educational Camps 2011 21st Century Princess Program: 9 a.m.-3 p.m. Monday through Friday, July 23-27. For girls 12-15. Girls learn hair care, good manners and the importance of inner beauty. Homewood Suites by Hilton, 2001 E. Highland Ave., Phoenix. $495. www. homewoodsuites. hilton.com. (623) 848-1844. Barrow Institute Summer Camp: 9 a.m.-4 p.m. Mondays through Fridays, July 23 through Aug. 3. For ages 12-14. Activities include exploring laboratories and researching the effectiveness of treatments and medicines. July 23-27 for beginning students, and July 30-Aug. 3 for advanced students. Barrow Neurological Institute, 350 W. Thomas Road, Phoenix: $195-$220: www. thebni, com.(602) 716-2028. Digital Kids World Summer Camp: 9 a.m.--4 p.m. Mondays through Fridays, July 30 through Aug. 17. For kids 6-14. Choose from a variety of technical classes, such as comic book design and video game design. Morning and afternoon camps held in weekly sessions . Digital Kids World, 5070 N. Central Ave., Phoenix. $150 weekly for kids 6-9; $225 weekly for kids 10-14. www. digitalkidsworld, com.(602) 445-3925. Kids Advanced College Program: Mondays through Thursdays, July 30 through Sept. 19. For ages 8-14. Classes include lively computer design, engineering and writing. Prices and times vary. Paradise Valley Community College, 18401 N. 32nd St., Phoenix. $99--$379. www.pvc.maricopa.edu. (602) 787-6804. Camp Zoo: Mondays through Fridays, July 30 through Aug. 13. For ages 4-14. Younger kids work with smaller animals, basic care giving and art projects, while older children explore animal medicine. Morning, afternoon, evening and full-day sessions available. Phoenix Zoo, 455 N. Galvin Parkway, Phoenix. $153-$280 per week. www. phoenixzoo.org. (602) 273-1341.
Question: According to the passage, these activities are mainly intended for _ .
Options: (A) children (B) teachers (C) parents (D) college students
Example Output: A

Example Input: Article: San Francisco has its cable cars. Seattle has its Space Needle. And, Longview has its squirrel bridge. The bridge, which has attracted international attention, is now a local landmark. The Nutty Narrows Bridge was built in 1963 by a local builder, Amos Peters, to give squirrels a way to cross the busy road without getting flattened by passing cars. The original bridge was built over Olympia Way on the west edge of the library grounds. Before the bridge was built, squirrels had to avoid traffic to and from the Park Plaza office building where office staff put out a nutty feast for the squirrels. Many times, Peters and others who worked in and near Park Plaza witnessed squirrels being run over. One day Peters found a dead squirrel with a nut still in its mouth, and that day's coffee break discussion turned into squirrel safety. The group of businessmen cooked up the squirrel bridge idea and formed a committee to ask the blessing of the City Council .The Council approved, and Councilwoman Bess LaRiviere named the bridge "Nutty Narrows." After architects designed the bridge, Amos Peters and Bill Hutch started Construction, They built the 60-foot bridge from aluminum and lengths of fire hose . It cost 1,000. It didn't take long before reports of squirrels using the bridge started. Squirrels were even seen guiding their young and teaching them the ropes. The story was picked up by the media, and Nutty Narrows became know in newspapers all over the world. In 1983, after 20 years of use, Peters took down the worn-out bridge. Repairs were made and crosspieces were replaced. The faded sign was repainted and in July 1983, hundreds of animal lovers attended the completion ceremony of the new bridge. Peters died in 1984, and a ten-foot wooden squirrel sculpture was placed near the bridge in memory of its builder and his devotion to the project.
Question: The Nutty Narrows Bridge was built in order to _ .
Options: (A) offer squirrels a place to eat nuts (B) set up a local landmark (C) help improve traffic (D) protect squirrels
Example Output:
D