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.

Input: Consider Input: Paragraph- Sent 1: When a stream or river slows down, it starts dropping its sediments.
Sent 2: Larger sediments are dropped in steep areas.
Sent 3: Some smaller sediments can still be carried by a slow moving stream or river.
Sent 4: Smaller sediments are dropped as the slope becomes less steep.
Sent 5: Alluvial Fans In arid regions, a mountain stream may flow onto flatter land.
Sent 6: The stream comes to a stop rapidly.
Sent 7: The deposits form an alluvial fan.
Sent 8: Deposition also occurs when a stream or river empties into a large body of still water.
Sent 9: In this case, a delta forms.
Sent 10: A delta is shaped like a triangle.
Sent 11: It spreads out into the body of water.
Question: What might you find when a mountain stream flows onto flatter land and comes to a rapid stop in arid regions? (A) Delta (B) Drop off (C) Sand bar (D) Alluvial Fans (E) Deposits.

Output: D.

Input: Consider Input: Paragraph- Sent 1: (CNN) -- German art collector Cornelius Gurlitt, whose nearly priceless collection was confiscated because it was suspected to contain pieces looted by the Nazis, died Tuesday and left the masterpieces to a Swiss museum.
Sent 2: One day after Gurlitt's death at the age of 81, the Museum of Fine Arts Bern announced that Gurlitt had named it "his unrestricted and unfettered sole heir."Sent 3: The news came as a surprise, the museum said Wednesday, because Gurlitt had never had any connection to it.
Sent 4: The museum's directors are delighted at the news, they said in a statement, but also recognize that there are outstanding legal and ethical questions surrounding the collection.
Sent 5: Gurlitt had undergone major heart surgery and was hospitalized for many weeks, his representative said in a statement.
Sent 6: Gurlitt grabbed the attention of the art world when German prosecutors seized more than 1,200 paintings from his Munich apartment in 2012, including works by Picasso and Matisse.
Sent 7: The collection was confiscated as part of an investigation into tax fraud, but then it was thought that some of the paintings may have been works that were looted by the Nazis.
Sent 8: Just last month, part of the collection was returned to Gurlitt as part of a deal with Germany's cultural authorities and the Bavarian Justice Ministry.
Sent 9: Under the agreement, works owned by Gurlitt that were not under suspicion were returned to him.
Sent 10: Those suspected of being stolen were to be held securely while a task force investigates their provenance -- and will be returned to their original Jewish owners or their descendants if a claim is proven.
Sent 11: Gurlitt's representative said that with the art collector's death, the investigation into the collection ceases.
Sent 12: The court that was handling the investigation proceedings will now function as an estate court in the case.
Question: Why did German prosecutors initially seize over 1,200 paintings from Gurlitt's apartment? (A) As part of an investigation into tax fraud (B) Because he stole them from the museum (C) Because he donated them to a Swiss museum (D) The collection was confiscated as part of an investigation into tax fraud (E) Because it was suspected to contain pieces looted by the Nazis.

Output: A, D, E.

Input: Consider Input: Paragraph- Sent 1: Breathing is the process of moving air into and out of the lungs.
Sent 2: The process depends on a muscle called the diaphragm.
Sent 3: This is a large, sheet-like muscle below the lungs.
Sent 4: Inhaling, or breathing in, occurs when the diaphragm muscle tightens.
Sent 5: This increases the size of the chest.
Sent 6: This too decreases air pressure inside the lungs.
Sent 7: This action allows air and gases to enter the lungs.
Sent 8: Exhaling, or breathing out, occurs when the diaphragm muscle relaxes.
Sent 9: This decreases the size of the chest.
Sent 10: This increases air pressure inside the lungs.
Sent 11: This action allows for air to leave the lungs.
Sent 12: When you inhale, air enters the respiratory system through your nose and ends up in your lungs, where gas exchange with the blood takes place.
Sent 13: What happens to the air along the way?
Sent 14: In the nose, mucus and hairs trap any dust or other particles in the air.
Sent 15: The air is also warmed and moistened.
Sent 16: Next, air passes through a passageway that is connected to the windpipe.
Sent 17: The air then finds its way to the lungs.
Sent 18: In the chest, the windpipe splits so that air enters both the right and left lung.
Question: What is happening when your chest decreases in size while breathing? (A) Exhaling (B) Inhaling (C) Sweating (D) Exhaling, or breathing out.
Output: A, D.