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: If you have a mass of 50 kg on Earth, what is your weight in newtons?
Sent 2: An object with more mass is pulled by gravity with greater force.
Sent 3: Mass and weight are closely related.
Sent 4: However, the weight of an object can change if the force of gravity changes.
Sent 5: On Earth, the force of gravity is the same everywhere.
Sent 6: So how does the force of gravity change?
Sent 7: It doesnt if you stay on Earth.
Sent 8: What if we travel to another planet or moon in our solar system?
Sent 9: Look at the photo of astronaut Edwin E. Aldrin Jr. taken by fellow astronaut Neil Armstrong in the Figure.
Sent 10: They were the first humans to walk on the moon.
Sent 11: An astronaut weighs less on the moon than he would on Earth.
Sent 12: This is because the moons gravity is weaker than Earths.
Sent 13: The astronauts mass, on the other hand, did not change.
Sent 14: He still contained the same amount of matter on the moon as he did on Earth.
Sent 15: If the astronaut weighed 175 pounds on Earth, he would have weighed only 29 pounds on the moon.
Sent 16: If his mass on Earth was 80 kg, what would his mass have been on the moon?
Sent 17: [Figure 3].
Question: This unit of measurement can be used instead of pounds. What is it? (A) Kilograms (B) Newtons.

Ex Output:
A, B.

Ex Input:
Paragraph- Sent 1: The Bush administration did not develop new diplomatic initiatives on al Qaeda with the Saudi government before 9/11.
Sent 2: Vice President Cheney called Crown Prince Abdullah on July 5, 2001, to seek Saudi help in preventing threatened attacks on American facilities in the Kingdom.
Sent 3: Secretary of State Powell met with the crown prince twice before 9/11.
Sent 4: They discussed topics like Iraq, not al Qaeda.U.S.-Saudi relations in the summer of 2001 were marked by sometimes heated disagreements about ongoing Israeli- Palestinian violence, not about Bin Laden.
Sent 5: The confirmation of the Pentagon's new leadership was a lengthy process.
Sent 6: Deputy Secretary Wolfowitz was confirmed in March 2001 and Under Secretary of Defense for Policy Douglas Feith in July.
Sent 7: Though the new officials were briefed about terrorism and some of the earlier planning, including that for Operation Infinite Resolve, they were focused, as Secretary Rumsfeld told us, on creating a twenty-first-century military.
Sent 8: At the Joint Chiefs of Staff, General Shelton did not recall much interest by the new administration in military options against al Qaeda in Afghanistan.
Sent 9: He could not recall any specific guidance on the topic from the secretary.
Sent 10: Brian Sheridan-the outgoing assistant secretary of defense for special operations and low-intensity conflict (SOLIC), the key counterterrorism policy office in the Pentagon-never briefed Rumsfeld.
Sent 11: He departed on January 20; he had not been replaced by 9/11.
Sent 12: Rumsfeld noted to us his own interest in terrorism, which came up often in his regular meetings with Tenet.
Sent 13: He thought that the Defense Department, before 9/11, was not organized adequately or prepared to deal with new threats like terrorism.
Sent 14: But his time was consumed with getting new officials in place and working on the foundation documents of a new defense policy, the quadrennial defense review, the defense planning guidance, and the existing contingency plans.
Sent 15: He did not recall any particular counterterrorism issue that engaged his attention before 9/11, other than the development of the Predator unmanned aircraft system.
Sent 16: The commander of Central Command, General Franks, told us that he did not regard the existing plans as serious.
Sent 17: To him a real military plan to address al Qaeda would need to go all the way, following through the details of a full campaign (including the political-military issues of where operations would be based) and securing the rights to fly over neighboring countries.
Sent 18: The draft presidential directive circulated in June 2001 began its discussion of the military by reiterating the Defense Department's lead role in protecting its forces abroad.
Question: Was the leadership of Deputy Secretary Wolfowitz confirmed before or after Vice President Cheney called Crown Prince Abdullah to seek Saudi help? (A) Before (B) After the saudi's help (C) March 2001 (D) July 5 2001.

Ex Output:
A, C.

Ex Input:
Paragraph- Sent 1: The film is set in Igloolik in the Eastern Arctic wilderness at the dawn of the first millennium .
Sent 2: The wind is blowing over a bleak snowy landscape while a man tries to herd away some marauding dogs .
Sent 3: We hear the voice of an old man singing a childish song .
Sent 4: Inside a stone house a strange shaman by the name of Tungajuaq , who comes from up north , is singing playfully to the gathered community and camp leader Kumaglak .
Sent 5: But among the spectators there are some mistrustful faces .
Sent 6: Flash forward to another day .
Sent 7: Qulitalik is bidding goodbye to his sister Panikpak , wife of Kumaglak , promising to come if she calls for help in her heart .
Sent 8: She gives him her husband's rabbit's foot for spiritual power .
Sent 9: Qulitalik tells his sister , '' Tulimaq is the one they 'll go after now . '' Sent 10: It seems that Qulitalik is leaving to escape a threat , and the hope is that one day he will return to help .
Sent 11: As Panikpak watches him leave , we hear a voice-over from a woman : '' We never knew what he was or why it happened .
Sent 12: Evil came to us like Death .
Sent 13: It just happened and we had to live with it . '' Sent 14: Flash back to the original scene in the stone house .
Sent 15: The visitor and the camp leader Kumaglak are in a '' friendly '' spiritual duel involving binding in leather thongs .
Sent 16: But Panikpak is startled when the stone lamp in front of her breaks in half , and , to the horror of those present , Kumaglak falls over dead .
Sent 17: The visitor removes the leader's walrus-tooth necklace from Kumaglak's body , and , passing by Tulimaq , he puts the necklace around the neck of Sauri , the son of the murdered leader Kumaglak , saying , '' Be careful what you wish for '' .
Question: Who gives her brother her husband's rabbit's foot? (A) Panikpak (B) Kumaglak.

Ex Output:
A.