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 two types of charges build up in unbalanced items? (A) Outside charges (B) Neutral (C) Negative Charge and Positive Charge (D) Good charges (E) Positive and negative (F) Negative (G) Static Charge (H) Negative charges (I) Bad Charges (J) Positive.

Output: C, E.

Input: Consider Input: Paragraph- Sent 1: The first rule is parental.
Sent 2: The primitive monarchy is in the home.
Sent 3: A young baby cries.
Sent 4: The trained nurse turns on the light, lifts the baby, hushes it, sings to it, rocks it, and stills its weeping by caresses and song.
Sent 5: When next the baby is put down to sleep, more cries, more soothing and disturbance, and the setting of a tiny instinct which shall some day be will--the power of control.
Sent 6: The grandmother arrives on the scene.
Sent 7: When baby cries, she plants the little one firmly in its crib, turns down the light, pats and soothes the tiny restless hands that fight the air, watches, waits.
Sent 8: From the crib come whimpers, angry cries, yells, sobs, baby snarls and sniffles that die away in a sleepy infant growl.
Sent 9: Silence, sleep, repose, and the building of life and nerve and muscle in the quiet and the darkness.
Sent 10: The baby has been put in harmony with the laws of nature--the invigoration of fresh air, sleep, stillness--and the little one wakens and grows like a fresh, sweet rose.
Sent 11: The mother, looking on, learns of the ways of God with men.
Question: What characters soothe the baby's weeping? (A) The mother (B) Mother and maternal aunt (C) The nurse (D) Trained nurse and grandmother (E) The grandmother (F) The nurse and grandmother.

Output: C, D, E, F.

Input: Consider Input: Paragraph- Sent 1: Force is a vector.
Sent 2: What then is a vector?
Sent 3: Think about how you would give directions to a friend.
Sent 4: You would not say, just walk half a mile.
Sent 5: The person may walk a half mile in the wrong direction!
Sent 6: More information is needed.
Sent 7: You may say, follow this particular road for a half mile.
Sent 8: You may say, look for the green house on Sumter St. In both examples, you provided a direction.
Sent 9: You also gave the distance.
Sent 10: In other words, you provided a vector.
Sent 11: You did not just give a distance.
Sent 12: Both pieces of information are needed to find a location.
Sent 13: This is just like describing forces.
Sent 14: To explain forces, both size and direction are needed.
Sent 15: Notice the girl in Figure 1.1.
Sent 16: She is pushing the swing away from herself.
Sent 17: Thats the direction of the force.
Sent 18: She can give the swing a strong push or a weak push.
Question: What does a strong push or a weak push have to do with force? (A) Connection of the force (B) Distance of force (C) Change it's velocity (D) They both have the same direction (E) The direction of the force is independent of the amount of force (F) Motion of the force (G) It explains the size of the force.
Output: D, E, G.