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.

Input: Consider Input: Paragraph- Sent 1: Static electricity is like a teeter-totter.
Sent 2: What happens if a teeter-totter is balanced?
Sent 3: Correct!
Sent 4: It does not move.
Sent 5: What about when its not balanced?
Sent 6: Yes, it will now begin to move.
Sent 7: Charges move when they are not balanced.
Sent 8: Charges can build up by friction.
Sent 9: Maybe you rub your feet on a wool mat or carpet.
Sent 10: Rubber soled shoes readily gain charges.
Sent 11: The wool carpet easily gives up charges.
Sent 12: The two items become unbalanced.
Sent 13: One item has a positive charge.
Sent 14: The other has a negative charge.
Sent 15: The difference in charge is called static electricity.
Sent 16: Just like the teeter-totter, something is going to move.
Sent 17: Positive charges build up on the mat.
Sent 18: Negative charges build up on you.
Question: What happens if static electricity is not balanced? (A) There would be a positve or negative charge (B) There is a neutral charge (C) There is a bad charge (D) It sits still (E) It moves and increase its charge (F) Charges move, building up friction (G) It moves causing a charge (H) It does not move (I) There is a good charge (J) There is a positive charge for sure.

Output: A, E, F, G.

Input: Consider Input: Paragraph- Sent 1: And William Martinez, 28, who cut his medical school studies short because he couldn't afford the $39,000 in loans after two years of graduate school and four years of college.
Sent 2: Martinez works two jobs as a physician's assistant and supports his elderly parents and 8-year-old son.
Sent 3: Uncommon Good has a 22-member board of doctors, lawyers and representatives of Christian groups and is recruiting mentors.
Sent 4: One goal is to get the state Legislature to pass a law to provide loan forgiveness to medical professionals and lawyers who work with the poor.
Sent 5: Mintie said she hopes her organization can be a national model for other professions.
Sent 6: She is trying to bring legal aid services to the Inland Valley -- the closest legal aid office is in El Monte and represents 700,000 poor people throughout the San Fernando, San Gabriel and Inland valleys.
Sent 7: "Unless the legal aid is in the community, you can't say you are serving the poor," Mintie said.
Sent 8: Neal Dudovitz is the executive director of Neighborhood Legal Services of Los Angeles County, the legal aid office in El Monte.
Sent 9: He sees attorneys new to poverty law leave all the time because they can't afford the salary with their law school debt.
Sent 10: "She's really opened a lot of eyes in terms of having people understand how the educational debt is limiting and reducing the services that are available to low-income communities," Dudovitz said.
Sent 11: "Nancy is light years ahead of the curve on this stuff.
Sent 12: Very little is being done practically to solve it."Sent 13: Mintie, her colleagues say, could have made a lot of money in private practice.
Sent 14: "She's very kind and pleasant," said Julius Thompson, 45, an attorney at Inner City Law Center and an Uncommon Good recipient.
Sent 15: "But she's also a woman on a mission.
Sent 16: When she sets her sights on something, she's a formidable force.".
Question: Who said, "She's a formidable force."? (A) Neal Dudovitz (B) Julius Thompson (C) William Martinez (D) An attorney at Inner City Law Center (E) Mintie.

Output: B, D.

Input: Consider Input: Paragraph- Sent 1: Magnets are able to place a force on certain materials.
Sent 2: This force is called a magnetic force.
Sent 3: The force a magnet exerts is a little different from the forces you may normally think about.
Sent 4: You exert a force on a book when you lift it.
Sent 5: You also exert a force on the pedals of your bicycle.
Sent 6: In both those cases, those forces cause a change.
Sent 7: The change you see in both these cases is called motion.
Sent 8: Magnets, too, can produce change.
Sent 9: They can produce motion just like you do.
Sent 10: Unlike you, magnets do not have to touch something to exert a force.
Sent 11: A magnetic force is exerted over a distance.
Sent 12: Thats right, a magnet can push or pull certain items without ever touching them.
Sent 13: Thats how the maglev train works.
Sent 14: Do you know another type of force that does not require objects to touch?
Sent 15: These forces are known as non-contact forces.
Sent 16: Another type of non-contact force you may be familiar with is gravity.
Sent 17: Gravity too can cause changes in motion.
Sent 18: Gravity holds our moon in orbit without touching it.
Question: How do magnets produce change? (A) They produce change just like humans do (B) They produce change by exerting a force over a distance (C) By touching things (D) Magnets do not have to touch something to exert a force (E) They can produce motion.
Output: B, D, E.