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: Do not look for the Danteum in the Eternal City.
Sent 2: In true Dantean form, politics stood in the way of its construction in 1938.
Sent 3: Ironically this literature-inspired building can itself most easily be found in book form.
Sent 4: Reading this book I remembered Goethe's quote about frozen music.
Sent 5: Did Terragni try to freeze Dante's medieval miracle of song?
Sent 6: Certainly a cold-poem seems artistically repulsive.
Sent 7: Unflattering comparisons to the lake of Cocytus spring to mind too.
Sent 8: While I cannot read Italian, I can read some German.
Sent 9: After locating the original quotation I discovered that 'frozen' is a problematic (though common) translation of Goethe's original 'erstarrte.'Sent 10: The verb 'erstarren' more properly means 'to solidify' or 'to stiffen.'Sent 11: This suggests a chemical reaction in which the art does not necessarily chill in the transformation.
Sent 12: Nor can simple thawing yield the original work.
Sent 13: Like a chemical reaction it requires an artistic catalyst, a muse.
Sent 14: Indeed the Danteum is not a physical translation of the Poem.
Sent 15: Terragni thought it inappropriate to translate the Comedy literally into a non-literary work.
Sent 16: The Danteum would not be a stage set, rather Terragni generated his design from the Comedy's structure, not its finishes.
Question: Which word suggests chemical reaction through solidifying of stiffening? (A) Cocytus (B) Erstarren.

Ex Output:
B.

Ex Input:
Paragraph- Sent 1: You will remember the name of Garibaldi, the Italian patriot, who with Mazzini had been stirring up trouble for the Austrians.
Sent 2: They finally pursued him so closely that he had to leave Italy.
Sent 3: He came to America and set up a fruit store in New York City, where there were quite a number of his countrymen.
Sent 4: By 1854, he had made a great deal of money in the fruit business, but had not forgotten his beloved country, and was anxious to be rich only in order that he might free Italy from the Austrians.
Sent 5: He sold out his business in New York, and taking all his money, sailed for Italy.
Sent 6: When the war of 1859 broke out, he volunteered, and fought throughout the campaign.
Sent 7: But the compromising terms of peace galled him, and he was not satisfied with a country only half free.
Sent 8: In the region around Genoa, he enrolled a thousand men to go on what looked like a desperate enterprise.
Sent 9: Garibaldi had talked with Cavour, and between them, they had schemed to overthrow the kingdom of the Two Sicilies and join this land to the northern country.
Sent 10: Of course, Cavour pretended not to know anything about Garibaldi, for the king of Naples and Sicily was supposed to be a friend of the king of Sardinia.
Sent 11: Nevertheless, he secretly gave Garibaldi all the help that he dared, and urged men to enroll with him.
Question: Who was pursued by the Austrians (A) Cavour (B) The king of Sardinia (C) Garibaldi (D) The King of Naples (E) Mazzini.

Ex Output:
C.

Ex Input:
Paragraph- Sent 1: At 9:48, a representative from the White House shelter asked if there were any indications of another hijacked aircraft.
Sent 2: The deputy director for operations mentioned the Delta flight and concluded that "that would be the fourth possible hijack."Sent 3: At 9:49, the commander of NORAD directed all air sovereignty aircraft to battle stations, fully armed.
Sent 4: At 9:59, an Air Force lieutenant colonel working in the White House Military Office joined the conference and stated he had just talked to Deputy National Security Advisor Stephen Hadley.
Sent 5: The White House requested (1) the implementation of continuity of government measures, (2) fighter escorts for Air Force One, and (3) a fighter combat air patrol over Washington, D.C.
Sent 6: By 10:03, when United 93 crashed in Pennsylvania, there had been no mention of its hijacking and the FAA had not yet been added to the teleconference.
Sent 7: The President and the Vice President The President was seated in a classroom when, at 9:05, Andrew Card whispered to him: "A second plane hit the second tower.
Sent 8: America is under attack."Sent 9: The President told us his instinct was to project calm, not to have the country see an excited reaction at a moment of crisis.
Sent 10: The press was standing behind the children; he saw their phones and pagers start to ring.
Sent 11: The President felt he should project strength and calm until he could better understand what was happening.
Sent 12: The President remained in the classroom for another five to seven minutes, while the children continued reading.
Sent 13: He then returned to a holding room shortly before 9:15, where he was briefed by staff and saw television coverage.
Sent 14: He next spoke to Vice President Cheney, Dr. Rice, New York Governor George Pataki, and FBI Director Robert Mueller.
Sent 15: He decided to make a brief statement from the school before leaving for the airport.
Sent 16: The Secret Service told us they were anxious to move the President to a safer location, but did not think it imperative for him to run out the door.
Sent 17: Between 9:15 and 9:30, the staff was busy arranging a return to Washington, while the President consulted his senior advisers about his remarks.
Sent 18: No one in the traveling party had any information during this time that other aircraft were hijacked or missing.
Sent 19: Staff was in contact with the White House Situation Room, but as far as we could determine, no one with the President was in contact with the Pentagon.
Question: How long after the President learned of the attack did United 93 crash in Pennsylvania? (A) 22 minutes (B) 58 minutes (C) 5 minutes (D) Almost an hour (E) A day later.

Ex Output:
B, D.