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: 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.

Ex Output:
B.

Ex Input:
Paragraph- Sent 1: You may be wondering, how can a glacier get so big?
Sent 2: Why does it move?
Sent 3: These are both good questions.
Sent 4: In the winter months, precipitation falls as snow.
Sent 5: This solid form of water builds up on the ground as long as the temperatures stay cold enough.
Sent 6: As the temperature rises, the snow starts to melt.
Sent 7: The frozen water changes state back into a liquid state.
Sent 8: Nearer the poles, summer does not last very long.
Sent 9: If the summer is long enough and warm enough, all the snow may melt.
Sent 10: This is what typically happens now.
Sent 11: The earth was a little cooler 12,000 years ago.
Sent 12: As a result, during the summer months, that amount of snow did not melt.
Sent 13: It may have only been an inch or so of snow that melted.
Sent 14: The following winter, snow fell on top of this left-over snow.
Sent 15: This next winters snowfall had a head start.
Sent 16: Year after year, the snow that did not melt became thicker and thicker.
Sent 17: Inch by inch the snow started to build up.
Sent 18: Over many years, layer upon layer of snow compacted and turned to ice.
Question: How does the snow turn into ice? (A) By get accumulated and compacted (B) Layer upon layer of snow compacted and turned to ice (C) Year after year, the snow that did not melt became thicker and thicker, building up, compacting, and turning into ice (D) By freezing during summer (E) As the temperature rose, the snow started to melt.

Ex Output:
A, B, C.

Ex Input:
Paragraph- Sent 1: The Romans: Legend says Rome was founded by Romulus, sired with twin brother Remus by Mars of a Vestal Virgin and abandoned on the Palatine Hill to be suckled by a she-wolf.
Sent 2: Historians agree with the mythmakers that the site and traditional founding date of 753 b.c.
Sent 3: are just about right.
Sent 4: Under Etruscan domination, Rome had been a monarchy until a revolt in 510 b.c.
Sent 5: established a patrician republic, which lasted five centuries.
Sent 6: In contrast to other Italian cities weakened by internal rivalries and unstable government, Rome drew strength from a solid aristocracy of consuls and senate ruling over plebeians proud of their Roman citizenship and only rarely rebellious.
Sent 7: Recovering quickly from the Gallic invasion of 390 b.c.
Sent 8: , the Romans took effective control of the peninsula by a military conquest reinforced by a network of roads with names that exist to this day: Via Appia, Flaminia, Aurelia.
Sent 9: All roads did indeed lead toand fromRome.
Sent 10: By 250 b.c.
Sent 11: , the city's population had grown to an impressive 100,000.
Sent 12: Roman power extended throughout the Mediterranean with a victory in the Punic Wars against Carthage (now Tunisia) and conquests in Macedonia, Asia Minor, Spain, and southern France.
Sent 13: The rest of Italy participated only by tax contributions to the war effort and minor involvement in commerce and colonization.
Sent 14: Resentment surfaced when former Etruscan or Greek cities such as Capua, Syracuse, and Taranto supported Hannibal's invasion in 218 b.c.
Sent 15: Rome followed up defeat of the Carthaginians with large-scale massacres and enslavement of their Italian supporters.
Sent 16: The Third and final Punic War ended in 149 b.c.
Sent 17: , though national solidarity was still a long way off.
Sent 18: Under Julius Caesar, elected in 59 b.c.
Question: When had Rome's population grown to 100,000? (A) 390 b.c (B) 250 B.C (C) 260 B.C (D) By 250 b.c (E) Before 250 b.c.

Ex Output:
B, D.