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: Like a growing number of young women in Vietnam's northern part city of Haiphong, Pham Thi Hue was infected with HIV by her husband, one of the town's many drug users. But instead of being shamed into silence, as Vietnamese with HIV and AIDS are, the 25-year-old tailor and mother of one went public, appearing on television and at conferences. Her business suffered and her neighbors insulted her, but Hue has now become the public face of Mothers and Wives, an HIV/ AIDS support group established in Haiphong by a Norwegian nongovernmental organization and her neighborhood's People's Committee. Last year, she founded a smaller group named after a local flower. People who need advice on treatment or help preparing bodies for burial can dial a hot line and get assistance from able and sympathetic HIV victims. "We gather to support each other," Hue says. "When we are sick, what we need most is encouragement and comfort from people who understand our situation and are willing to share our happiness, as well as our sadness." On a hot and damp night last month, Hue welcomed into her small home a very thin woman, also a tailor, who was HIV positive. The woman tearfully told Hue that she had not told anyone about her condition, fearing that she would lose customers and that her daughter would be insulted at school. Hue became the wise elder, offering medical and personal advice.
Question: What did Pham Thi Hue do after she was infected with HIV?
Options: (A) She kept silent (B) She worked as usual (C) She stayed at home and cried every day. (D) She went public and gave help to others.

Ex Output:
D

Ex Input:
Article: The arrival of autumn starts the traditional fall festivals which aim to welcome the new season. Here's a guide to several fall festivals that are held in the Roanoke region each year. Boones Mill Apple Festival It is held the third Saturday in September every year.The festival is hosted by the Boones Mill Lions Club and attracts people from all over Virginia. The most important things of the festival include art shows, fried apple pies,and a high school band. There are lots of food,crafts,music,and games for every age group. Admission is free. For more information, call 540-334-5975. Blue Ridge Folklife Festival Ferrum College hosts the festival as an October celebration of the harvest every year.The festival shows some farm fresh produce and the farming practices of the last year.Children can enjoy playing many of the games.The festival begins at 10:00 a.m.Admission is $ 10 for adults and $ 5 for children and senior citizens.You can call 540-365-4412 or visit the website. Mountain Magic Fall Festival The town of Buchanan on the outskirts of Roanoke is the place where the Mountain Magic Fall Festival is held.The festival is held in October and has two to four groups of crafters,antique dealers,and food vendors.Live Bluegrass music plays all day and children enjoy visiting the pet zoo. The auto show and farmers' market are also big attractions. Call 540-357-2509 for more information. Vinton Fall Festival A 5K walk, a truck ride, and a civil war group are just some of the exciting parts of the Vinton Fall Festival.The festival is held in October under the golden shade trees in downtown Vinton.Other attractions include hayrides,agriculture judging, health education,and children's activities.Phone: 540-343-1364.
Question: If a boy and his parents go to Blue Ridge Folklife Festival,they should pay _ .
Options: (A) $5 (B) $10 (C) $15 (D) $25

Ex Output:
D

Ex Input:
Article: People usually have to cany passports to travel from one country to another. But should animals? Groups around the word are working to create parks that cross country borders. They hope that the parks will help die environment and bring peace and cooperation to neighboring countries. "People draw lines on a map and call them countries," said Steve Thompson of the National Parks Conservation Association. "But animals don' t understand international borders. " When animals are kept in small areas,they can spread diseases more easily. They can also hurt the environment by eating too many plants and other animals. Allowing animals to cross borders would help improve these conditions,experts say. But that's just one reason why people to create international parks. People have named the parks "peace parks" because these people believe the parks can help countries learn to work together. The parks create a link between communities and a common desire to learn more about one another. According to Steve Thompson, the parks can "help nations resolve international conflict or even war. " Today there are dozens of peace parks on five continents, The parks play an important role in southern Africa. The Kgalagadi Trausfrontier Park is in the Kalahari Desert in South Africa and Botswana. The countries work together to manage the land and the animals that live there. Other countries ,such as Zimbabwe and Lesotho, are also forming parks. The parks will let animals wander over larger parts of southern Africa, much as they did centuries ago, and it really helps expand elephant and lion populations, which are now damaged by, confinement in smaller parks. The parks can also help countries attracting tourists and creating jobs. But many issues still remain, such as illegal killing of animals, pollution, and population pressure on the land.
Question: Where are the peace parks built?
Options: (A) In mountains (B) In cities (C) Across deserts (D) Across country borders.

Ex Output:
D