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.

Example 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 the muscle called that tightens and relaxes, allowing you to breathe? (A) Chest (B) Diaphragm (C) Biceps.
Example Output: B.

Example Input: Paragraph- Sent 1: The little party in the cabin, so disastrously begun, finished, under the mellowing influence of wine and woman, in excellent feeling and with some hilarity.
Sent 2: Mamie, in a plush Gainsborough hat and a gown of wine-coloured silk, sat, an apparent queen, among her rude surroundings and companions.
Sent 3: The dusky litter of the cabin set off her radiant trimness: tarry Johnson was a foil to her fair beauty; she glowed in that poor place, fair as a star; until even I, who was not usually of her admirers, caught a spark of admiration; and even the captain, who was in no courtly humour, proposed that the scene should be commemorated by my pencil.
Sent 4: It was the last act of the evening.
Sent 5: Hurriedly as I went about my task, the half-hour had lengthened out to more than three before it was completed: Mamie in full value, the rest of the party figuring in outline only, and the artist himself introduced in a back view, which was pronounced a likeness.
Sent 6: But it was to Mamie that I devoted the best of my attention; and it was with her I made my chief success.
Question: Did the speaker do as the captain requested? (A) No (B) Yes.
Example Output: B.

Example Input: Paragraph- Sent 1: The movie is a powerful story that deals with feminism and patriarchy in the middle class of India .
Sent 2: It is shot in the present and past tense showing lives of the characters Mahender and Sudha as they lived together as well as separately .
Sent 3: The movie starts with Mahender getting down at the railway station and making his way to the waiting room just as it starts to rain heavily .
Sent 4: A woman , Sudha , is already sitting in the waiting room .
Sent 5: On seeing him , she tries to hide her face from him but later they confront each other .
Sent 6: Mahender has an accomplished business dealing with photography .
Sent 7: He respects his grandfather immensely .
Sent 8: Incidentally , he had been engaged to Sudha for 5 years but always made some excuse to delay their wedding .
Sent 9: However , this time his grandfather has fixed the wedding on the first week of the following month .
Sent 10: He reveals to Sudha that he is having an affair with one of the most radical representations of feminism in a girl called Maya .
Sent 11: He returns to tell Maya , but Maya has disappeared , leaving him some poetry .
Sent 12: Mahender then marries Sudha and is quite happy , but the sudden return of Maya causes tensions in their married life .
Sent 13: Mahender frequently tells Sudha about all the beautifully poignant , loving and authentic things Maya did over the years that they lived together .
Sent 14: Later , Maya tries to commit suicide , and this leads to Mahender spending time with her over a few weeks .
Sent 15: Sudha , not knowing about Maya 's suicide attempt and therefore believing that Mahender is being unfaithful to her , feels that her marriage was a mistake , and questions Mahender about his intentions .
Question: What is Mahender's connection to the lady who tries to commit suicide? (A) Having a police duty (B) He was her lover (C) He is her father (D) They had an affair.
Example Output:
B, D.