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.

Paragraph- Sent 1: Adrienne Saunders is happily married to her art dealer husband , Jack .
Sent 2: They have a daughter named Mary .
Sent 3: Adrienne hears from a friend that she thought she saw Jack in town when he claimed to be on an out of town business trip .
Sent 4: Adrienne confronts him , but he denies being in town , and their lives continue .
Sent 5: Soon after a museum curator is mysteriously murdered , and a relic that Jack bought for the museum is revealed to be a fake .
Sent 6: Jack is placed under suspicion , and then Adrienne receives word from the police that Jack perished in a car accident .
Sent 7: In trying to wrap up Jack 's affairs , Adrienne begins to suspect that her husband had switched identities with a high school classmate , Frank Sullivan .
Sent 8: When she sees a high school yearbook picture of her husband attributed to Sullivan , she is convinced .
Sent 9: She tracks down a relative of Saunders , who confirms that Frank and Jack were inseparable in high school .
Sent 10: After Jack died , the relative never saw Frank again .
Sent 11: She explained that Frank 's father was an alcoholic and that his mother worked as a toll booth operator .
Sent 12: She directs Adrienne to Frank 's mother , who lives in a rundown apartment in Brooklyn .
Sent 13: Frank 's mother bitterly receives the news that she has a granddaughter , telling Adrienne that Frank was always selfish and that he never looked in on her .
Sent 14: A stalker lurks at Adrienne 's loft .
Sent 15: He comes in to Adrienne 's bed while she is asleep and caresses her .
Sent 16: He watches Mary , who is spooked by the man in her room at night .
Question: Who is Mary's real father? (A) Sullivan (B) Frank Sullivan (C) Jack (D) Frank.
A, B, D.

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.
A, B, C.

Paragraph- Sent 1: Madrid, Spain (CNN) -- Relatives of a woman killed in a Spanish airline crash were erroneously given the remains of another victim, and then were asked by authorities to return them, CNN partner network CNN+ reported Thursday.
Sent 2: The victims of the crash were first laid out at a Madria convention center.
Sent 3: A Madrid judge has opened an investigation into the error, and judicial sources say the initial indication is that the mixup occurred not in the proper identification of the victim, but in delivering the wrong remains to the family in question, CNN+ reported.
Sent 4: The family Wednesday received an urn numbered 104, and were told it contained the ashes of their loved one, Pilar Gonzalez Ferreira, who died in the crash.
Sent 5: But as the family was preparing to leave Madrid, officials called to tell them about the error and asked for the return of urn 104, CNN+ reported.
Sent 6: Instead of urn 104, the family was supposed to have received urn 134, which actually contains the remains of Pilar Gonzalez, CNN+ reported, citing judicial sources and another family which also lost a relative in the crash.
Sent 7: The Spanair MD82 jet crashed last week at Madrid's airport as the plane was trying to take off, killing 154 people.
Sent 8: The aircraft, bound for Spain's Canary Islands, managed to rise only slightly before coming down quickly to the right of the runway, its tail section hitting the ground first, just off the asphalt.
Sent 9: Then the out-of-control plane skidded and bounced at least three times as it careered 1,200 meters (3,840 feet) across uneven terrain and exploded, coming to rest in a gully, a top official of the investigative commission told a news conference in Madrid on Tuesday.
Sent 10: Many of the bodies were badly charred from the fire, and authorities have used DNA samples to carry out numerous identifications.
Question: Where was the Spanish MD82 bound for when the crash occurred? (A) Spain's Barcelona (B) Canary Islands (C) Spain's Canary Islands (D) Secret service.
B, C.