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: Eric , a young boy , is excited about his birthday after reading a book and believes that a train will come for him , despite his sister Jill's disbelief .
Sent 2: A few hours later , the train station's control tower wakes up and in the roundhouse , Tillie , a young little blue switcher engine , along with her best bird friend , Chip , wakes up four other trains : Georgia , a kind all-purpose engine , Farnsworth , a stuck-up passenger engine , Jebediah , a worn-out old engine , and Pete , a gruff , burly freight engine .
Sent 3: After the tower assigns Farnsworth and Pete their jobs , Tillie tries to help with the milk train assigned to Jebediah , but the tower insists that she is too small for the job .
Sent 4: Georgia is assigned to pull the birthday train .
Sent 5: A clown named Rollo leads the toys into the train , including Stretch , a basketball player ; Missy , a ballerina ; a Handy Pandy , a panda ; Perky , an elephant ; and Grumpella , a stuffed bird .
Sent 6: During her journey , Georgia breaks down and is taken back to the roundhouse by Doc .
Sent 7: Left behind , Rollo eventually takes Doc's advice of flagging down one of the other engines returning from their daily runs over the mountain .
Sent 8: Farnsworth and Pete turn down their offers to pull the train .
Sent 9: Meanwhile , Tillie asks the tower to rescue the stranded train , but he insists that Tillie will never do the job .
Sent 10: Jebediah turns down his offer to pull the train because of his age , and returns to the roundhouse .
Sent 11: Chip and Tillie sneak past the sleeping tower and pulls the birthday train up a mountain .
Question: What train does Rollo lead the toys into? (A) To the birthday train (B) To the milk train (C) Farnsworth (D) Pete (E) Grumpella.
A, E.

Paragraph- Sent 1: If you build a campfire, you start with a large stack of sticks and logs.
Sent 2: As the fire burns, the stack slowly shrinks.
Sent 3: By the end of the evening, all that is left is a small pile of ashes.
Sent 4: What happened to the matter that you started with?
Sent 5: Was it destroyed by the flames?
Sent 6: It may seem that way.
Sent 7: What do you think happened?
Sent 8: The truth is that the same amount of matter still exists.
Sent 9: The wood changed not only to ashes, but also to carbon dioxide, water vapor, and other gases.
Sent 10: The gases floated off into the air, leaving behind just the ashes.
Sent 11: Although matter was changed, it was not created or destroyed.
Sent 12: Because the same amount of matter still exists, we can say that matter is conserved.
Sent 13: You may wonder how it can be conserved if something is now missing?
Sent 14: Assume you had measured the mass of the wood before you burned it.
Sent 15: Assume you had also trapped the gases released by the burning wood and measured their mass and the mass of the ashes.
Sent 16: What would you find?
Sent 17: The ashes and gases combined have the same mass as the wood you started with.
Sent 18: This example illustrates the law of conservation of mass.
Question: What happened to the matter changed to when burning a fire? (A) The wood changed to carbon dioxide, water vapor, and other gases that floated off into the air, leaving behind just the ashes (B) It changed to other gases (C) It changed to ashes (D) It changed to Carbon dioxide (E) It changed to water vapor (F) It was destroyed (G) More matter was created (H) All the matter changes to fire.
A, B, C, D, E.

Paragraph- Sent 1: The Agencies Confer When they learned a second plane had struck the World Trade Center, nearly everyone in the White House told us, they immediately knew it was not an accident.
Sent 2: The Secret Service initiated a number of security enhancements around the White House complex.
Sent 3: The officials who issued these orders did not know that there were additional hijacked aircraft, or that one such aircraft was en route to Washington.
Sent 4: These measures were precautionary steps taken because of the strikes in New York.
Sent 5: The FAA and White House Teleconferences.
Sent 6: The FAA, the White House, and the Defense Department each initiated a multiagency teleconference before 9:30.
Sent 7: Because none of these teleconferences-at least before 10:00- included the right officials from both the FAA and Defense Department, none succeeded in meaningfully coordinating the military and FAA response to the hijackings.
Sent 8: At about 9:20, security personnel at FAA headquarters set up a hijacking teleconference with several agencies, including the Defense Department.
Sent 9: The NMCC officer who participated told us that the call was monitored only periodically because the information was sporadic, it was of little value, and there were other important tasks.
Sent 10: The FAA manager of the teleconference also remembered that the military participated only briefly before the Pentagon was hit.
Sent 11: Both individuals agreed that the teleconference played no role in coordinating a response to the attacks of 9/11.
Sent 12: Acting Deputy Administrator Belger was frustrated to learn later in the morning that the military had not been on the call.
Sent 13: At the White House, the video teleconference was conducted from the Situation Room by Richard Clarke, a special assistant to the president long involved in counterterrorism.
Sent 14: Logs indicate that it began at 9:25 and included the CIA; the FBI; the departments of State, Justice, and Defense; the FAA; and the White House shelter.
Sent 15: The FAA and CIA joined at 9:40.
Sent 16: The first topic addressed in the White House video teleconference-at about 9:40-was the physical security of the President, the White House, and federal agencies.
Sent 17: Immediately thereafter it was reported that a plane had hit the Pentagon.
Sent 18: We found no evidence that video teleconference participants had any prior information that American 77 had been hijacked and was heading directly toward Washington.
Question: What caused the Secret Service to enhance security around the White House complex? (A) Information regarding the planes (B) The plane attacks on the World Trade Center (C) Secret Service orders (D) The strikes in New York City.
B, D.