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: Although Bin Laden, Atef, and KSM initially contemplated using established al Qaeda members to execute the planes operation, the late 1999 arrival in Kandahar of four aspiring jihadists from Germany suddenly presented a more attractive alternative.
Sent 2: The Hamburg group shared the anti-U.S. fervor of the other candidates for the operation, but added the enormous advantages of fluency in English and familiarity with life in the West, based on years that each member of the group had spent living in Germany.
Sent 3: Not surprisingly, Mohamed Atta, Ramzi Binalshibh, Marwan al Shehhi, and Ziad Jarrah would all become key players in the 9/11 conspiracy.
Sent 4: Mohamed Atta was born on September 1, 1968, in Kafr el Sheikh, Egypt, to a middle-class family headed by his father, an attorney.
Sent 5: After graduating from Cairo University with a degree in architectural engineering in 1990, Atta worked as an urban planner in Cairo for a couple of years.
Sent 6: In the fall of 1991, he asked a German family he had met in Cairo to help him continue his education in Germany.
Sent 7: They suggested he come to Hamburg and invited him to live with them there, at least initially.
Sent 8: After completing a course in German, Atta traveled to Germany for the first time in July 1992.
Sent 9: He resided briefly in Stuttgart and then, in the fall of 1992, moved to Hamburg to live with his host family.
Sent 10: After enrolling at the University of Hamburg, he promptly transferred into the city engineering and planning course at the Technical University of Hamburg-Harburg, where he would remain registered as a student until the fall of 1999.
Sent 11: He appears to have applied himself fairly seriously to his studies (at least in comparison to his jihadist friends) and actually received his degree shortly before traveling to Afghanistan.
Sent 12: In school, Atta came across as very intelligent and reasonably pleasant, with an excellent command of the German language.
Sent 13: When Atta arrived in Germany, he appeared religious, but not fanatically so.
Sent 14: This would change, especially as his tendency to assert leadership became increasingly pronounced.
Sent 15: According to Binalshibh, as early as 1995 Atta sought to organize a Muslim student association in Hamburg.
Sent 16: In the fall of 1997, he joined a working group at the Quds mosque in Hamburg, a group designed to bridge the gap between Muslims and Christians.
Sent 17: Atta proved a poor bridge, however, because of his abrasive and increasingly dogmatic personality.
Sent 18: But among those who shared his beliefs, Atta stood out as a decisionmaker.
Question: Were the key players in the 9/11 conspiracy who executed the plane operations established al Qaeda members? (A) Yes (B) Not specified.

Ex Output:
A.

Ex Input:
Paragraph- Sent 1: Unfortunately, because the zooming is rather fast, it is easy to miss the rest of the sentence, so as you correctly note, some viewers got an incorrect impression.
Sent 2: It would have been fair for Moore to point out this possible misinterpretation on his website.
Sent 3: However, the claim of deliberate distortion is ludicrous for several reasons: a) Moore clearly states that "before he came to Flint", Heston gave an interview.
Sent 4: In the excerpt from said interview, we can see that it is from March.
Sent 5: If Moore wanted to deceive his viewers, why would he say this, and show the month the interview was published?
Sent 6: b) Why should Moore leave the words "Clinton is on the Today Show" visible in the text, which is necessary to correctly interpret the highlighted part?
Sent 7: I reviewed the sequence several times and it is perfectly possible to see this text without pausing.
Sent 8: c) Both the "soccer mom" interview and the sequences showing the NRA rally make no effort to distort the fact that this rally happened months after the fact.
Sent 9: The camera lingers on Bush/Cheney posters, and the protestor is quoted as saying that "we wanted to let the NRA know that we haven't forgotten about Kayla Rolland".
Sent 10: You make the hysterical claim that the interview "may be faked" (on the basis that no name is shown for the interviewee), but if Moore had faked it, why the hell should he put this sentence in the protestor's mouth, which directly contradicts the conclusion that the rally happened hours after Kayla's death?
Sent 11: Why did Moore, the masterful deveiver, not edit this sequence out?
Sent 12: This makes no sense.
Sent 13: Opinions may vary on how tasteless it was for Heston to hold a pro gun rally on the location of the nation's youngest school shooting months after the fact, but this sequence of "Bowling" is without doubt the most unfair to Heston.
Sent 14: The claims of deliberate distortion don't hold up when viewing the whole scene, though -- as "Hanlon's Razor" states, one should never attribute to malice what can be attributed to incompetence.
Sent 15: The somewhat inept editing of the NRA press release has led some viewers to wrong conclusions, which is unfortunate, but Moore's critics have no interest in viewing the matter fairly.
Sent 16: Had they done so, Moore himself would probably have apologized for the gaffe.
Sent 17: In any case, at no point does Moore make a false statement, in contradiction to claims by critics that his documentary is "full of lies".
Question: What text gave viewers the wrong impression (A) Text where the zooming is rather fast (B) The text from the "soccer mom" interview (C) The zooming isn't slow enough (D) They didn't care (E) Clinton is on the Today Show (F) The text that was meant to explain the NRA rally (G) The zooming is fast.

Ex Output:
A, C, E, G.

Ex Input:
Paragraph- Sent 1: Fossils can be used to match up rock layers.
Sent 2: As organisms change over time, they look different.
Sent 3: Older fossils will look different than younger fossils.
Sent 4: Some organisms only survived for a short time before going extinct.
Sent 5: Knowing what organisms looked like at certain times also helps date rock layers.
Sent 6: Some fossils are better than others for this use.
Sent 7: The fossils that are very distinct at certain times of Earths history are called index fossils.
Sent 8: Index fossils are commonly used to match rock layers.
Sent 9: You can see how this works in Figure 2.30.
Sent 10: If two rock layers have the same index fossils, then they're probably about the same age.
Question: How can extinction help to date rock layers? (A) Some animals only existed during certain time periods before becoming extinct. It helps to date that layer of rock where these animal fossils are present (B) Rock layers change color (C) It shows how many of a species lived (D) It shows young fossils (E) Organisms helped shape rocks and layers upon their extinction (F) Some organisms only survived for a short time before going extinct (G) It shows glaciers.

Ex Output:
A, F.