You are given a paragraph, a question and some answer options (associated with "A", "B", "C", "D", etc.) You need to list all the correct answer options with their associated letters (e.g. "A" can be a valid answer). Note that sometimes, more than one option can answer the question correctly and completely. In those cases, please generate all such options separated by a comma (e.g. "A, B" is a valid answer). Do not generate anything else apart from one or more of the following characters: 'A', 'B, 'C', 'D', etc.

Ex Input:
Paragraph- Sent 1: (CNN) -- Cuba will pardon more than 2,900 prisoners, the government said Friday, though U.S. subcontractor Alan Gross is not among those who will be freed.
Sent 2: The decision to release the prisoners follows "numerous requests" from their family members and religious institutions, and is a humanitarian gesture, said Cuban President Raul Castro.
Sent 3: Among those who might be freed are prisoners over the age of 60, along with those who are sick, female or young with no previous criminal record.
Sent 4: With some exceptions, prisoners convicted of spying, terrorism, murder and drug trafficking will not be released.
Sent 5: Those who will be freed have already served a "important" part of their sentences and exhibited good behavior, according to an official statement published on the state-run website Cubadebate.
Sent 6: The jailed American, Gross, will not be among those pardoned, the Cuban Interests Section in Washington said.
Sent 7: Gross was jailed in December 2009, when he was working as a subcontractor on a U.S. Agency for International Development project aimed at spreading democracy.
Sent 8: Castro has accused him of importing satellite equipment to connect dissidents to the Internet, and this year Cuba's highest court upheld the 15-year sentence imposed on Gross for committing crimes against the security of the state.
Sent 9: He has maintained his innocence and said he was trying to help connect the Jewish community to the Internet.
Sent 10: Castro, speaking to the National Assembly, said that 86 prisoners from 25 countries would be among those released in coming days.
Sent 11: He cited the upcoming visit of Pope Benedict XVI as one of the motivations behind the move, which he said showed the "generosity and strength of the revolution."Sent 12: The pope has said he plans to visit Mexico and Cuba before Easter.
Question: Why was Alan Gross sentence to jail? (A) He was accused of drug trafficking (B) Castro accused him of importing satellite equipment to connect dissidents to the Internet (C) He was accused of committing crimes against the security of the state.

Ex Output:
B, C.

Ex Input:
Paragraph- Sent 1: The Creed family moves into a new home , close to a road where truckers often drive unsafely .
Sent 2: They befriend their neighbor , Jud Crandall , who tells them about a nearby pet cemetery which was built on Indian burial grounds and is rumored to be haunted .
Sent 3: Later , Louis Creed , working at the University of Maine at Orono health center , treats Victor Pascow , who has been hit by a truck and incurred massive head injuries .
Sent 4: Pascow dies after grabbing Louis , addressing him by name , and uttering a cryptic message .
Sent 5: He also promises to '' come to '' him .
Sent 6: That night , in what is seemingly a dream , Victor visits Louis , warning him about the burial ground beyond the pet cemetery .
Sent 7: Louis wakes up to find his feet covered in dirt .
Sent 8: Church , a cat owned by Louis ' daughter Ellie , is killed by a truck on the road in front of their house while Rachel , Ellie and Gage are in Chicago .
Sent 9: Jud takes Louis to an ancient Micmac Indian burial ground beyond the pet cemetery they visited earlier and buries the cat .
Sent 10: Church is brought back to life , but is an evil shell of himself .
Sent 11: He attacks Louis and reeks of decomposition .
Sent 12: Louis asks if a person was ever buried in the grounds .
Sent 13: Jud replies , '' Christ on His throne , no. .
Sent 14: And whoever would? ''Sent 15: Sometime later , Louis ' young son Gage is killed by a truck on the same road .
Sent 16: Louis considers burying Gage in the burial grounds .
Sent 17: Jud tries to dissuade him from doing so , telling him about a young man from town , Timmy Baterman , who died in service during World War II .
Question: What states are named in the story? (A) Maine (B) Mississippi and Maryland (C) Maine and Chicago (D) Montana.

Ex Output:
A, C.

Ex Input:
Paragraph- Sent 1: Do all plants live on the land?
Sent 2: Some plants do live in the water.
Sent 3: To do this, they have evolved special traits.
Sent 4: Plants that live in water are called aquatic plants.
Sent 5: Living in water has certain benefits.
Sent 6: There is certainly plenty of water!
Sent 7: The plant does not need special traits to absorb, transport, or conserve water.
Sent 8: They do not need a large root system.
Sent 9: They do not need a strong stem to hold up the plant.
Sent 10: The plant uses the water for support.
Sent 11: Dont think water plants have it easy, though.
Sent 12: They also face challenges.
Sent 13: Living in water isnt that easy.
Sent 14: They do need some special traits to survive.
Sent 15: It is tough for the plant to reproduce.
Sent 16: Pollination by wind or animals cant happen under water.
Sent 17: Sunlight cannot reach very far beneath the waters surface.
Sent 18: Some aquatic plants have floating flowers and leaves.
Question: Do aquatic plants require special traits to conserve water? (A) No (B) Yes.

Ex Output:
A.