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 Q]: Paragraph- Sent 1: You know that friction also causes heat.
Sent 2: Think about when you rub your hands together.
Sent 3: It is friction that makes them warm.
Sent 4: But why does this happen?
Sent 5: Friction causes the molecules on rubbing surfaces to move faster.
Sent 6: Faster moving particles have more heat energy.
Sent 7: Heat from friction can be useful.
Sent 8: Can you think of other places where you might find friction?
Sent 9: Friction also lets you light a match.
Sent 10: Heat from friction can also cause problems.
Sent 11: It can cause a car to overheat.
Sent 12: To reduce friction, oil is added to the engine.
Sent 13: Oil coats the surfaces of moving parts.
Sent 14: This coating of oil makes them slippery.
Sent 15: When things are slippery there is less friction.
Sent 16: Have you ever seen a sign that says, slippery when wet?
Sent 17: This too has to do with friction.
Sent 18: Water, like oil, can reduce friction.
Sent 19: The wet surface may allow your shoes to slide more easily.
Question: What can be done to prevent friction problems in engines? (A) Slippery (B) Add oil (C) Water is added to the engine (D) Add water (E) The surfaces of moving parts can be coated in oil (F) Antifreeze is added to the engine (G) It is coated with sand (H) Oil is added to the engine.
[EX A]: B, E, H.

[EX Q]: Paragraph- Sent 1: Paul put the despised watch away And laid out before him his array Of stones and metals, and when the morning Struck the stones to their best adorning, He chose the brightest, and this new watch Was so light and thin it seemed to catch The sunlight's nothingness, and its gleam.
Sent 2: Topazes ran in a foamy stream Over the cover, the hands were studded With garnets, and seemed red roses, budded.
Sent 3: The face was of crystal, and engraved Upon it the figures flashed and waved With zircons, and beryls, and amethysts.
Sent 4: It took a week to make, and his trysts At night with the Shadow were his alone.
Sent 5: Paul swore not to speak till his task was done.
Sent 6: The night that the jewel was worthy to give.
Sent 7: Paul watched the long hours of daylight live To the faintest streak; then lit his light, And sharp against the wall's pure white The outline of the Shadow started Into form.
Sent 8: His burning-hearted Words so long imprisoned swelled To tumbling speech.
Sent 9: Like one compelled, He told the lady all his love, And holding out the watch above His head, he knelt, imploring some Littlest sign.
Sent 10: The Shadow was dumb.
Question: Did Paul follow through on his swear not to speak until he was done making his watch? (A) No (B) Maybe (C) Yes (D) Yes, Paul did not speak until he was sure the watch was worthy to present to the woman he loves.
[EX A]: C, D.

[EX Q]: Paragraph- Sent 1: Iwasaki's careful respect for the Long Beach program and its lawyers earned him the political capital he needed to complete his takeover in a matter of weeks.
Sent 2: "The Long Beach program had strong support in the community so in a situation like that, one has to recognize that it's not like a takeover where I have all the answers and I know best," Iwasaki said.
Sent 3: "The people in the community who are working there have the contacts and the knowledge that will allow service to continue."Sent 4: Things have gone less smoothly across town.
Sent 5: There, Dudovitz, a longtime poverty lawyer and executive director of the San Fernando Valley's 36-year-old legal aid program, continues to struggle with his hostile takeover of the neighboring San Gabriel-Pomona Valleys service area one year after it was accomplished.
Sent 6: On the bright side, Dudovitz has extended his respected program to clients in the San Gabriel-Pomona Valley, and he now operates on a much larger budget, $6.5 million last year.
Sent 7: However, his clash with the old San Gabriel program resulted in litigation, bitter feelings and a mission that some say is not clearly focused on serving poor people.
Sent 8: "It was a difficult situation that was probably mishandled by everyone," a longtime observer of the public interest community said of the San Fernando Valley-San Gabriel-Pomona Valley merger.
Sent 9: "There are very few people who come out as the heroes.
Sent 10: Personalities got involved when they shouldn't have.
Sent 11: Things were said that caused bad feelings and couldn't be unsaid."Sent 12: Iwasaki's merger with the smaller, 48-year-old Long Beach program was friendly and fast, and no one - not even Long Beach board members - lost a job.
Sent 13: When it was over, Iwasaki had $1 million more in federal dollars and two new offices.
Sent 14: Long Beach clients regained services they had lost years ago when federal budget cuts and dwindling grants reduced the staff of 15 lawyers to five and cut immigration and consumer law programs.
Sent 15: Iwasaki said, "[I judged the transition] better than I could have hoped for.".
Question: How long was the Long Beach Program been in operation? (A) 48 years (B) 30 year (C) 8 years (D) 36 years (E) Eight (F) 2 weeks (G) 6.5 years.
[EX A]:
A.