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: 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.
B, E, H.

Paragraph- Sent 1: Taliban and American aid.
Sent 2: After the September 11 attacks, it was necessary for conservatives to somehow explain away the fact that the US government gave 245 million dollars to the new evildoers du jour.
Sent 3: Never mind the fact that authors such as Robert Scheer warned of aiding the Taliban as early as in May 2001.
Sent 4: Never mind that they did so not out of some humanitarian motivation, but because of the Taliban's violent enforcement of the ban on opium poppies.
Sent 5: Never mind that in a regime that is controlled by warlords, it does not matter who is authorized to distribute the aid -- the ruling regional warlords will seize control of it and use it to their own advantage.
Sent 6: Never mind that this very argument has been used by hawks in opposition to sending humanitarian aid to Iraq's Saddam Hussein.
Sent 7: Never mind that the Taliban continued selling opium in spite of the deal.
Sent 8: Never mind that this is all documented on Michael Moore's website about the film.
Sent 9: Gun homicides.
Sent 10: Statistics are Moore's weakest point, and it is surprising that his critics don't dwell on them longer.
Sent 11: That's because they know all too well that Moore is correct: The United States have a far greater homicide rate (both gun- and non-gun) than most other first world countries.
Sent 12: His main mistake is that he does not use population corrected data, his second mistake is that he does not cite his sources (and, as you correctly point out, he probably uses different reporting methods for the different countries).
Sent 13: A good comparison of international homicide rates can be found on the relatively neutral guncite.com website.
Question: What was the $245 Million in aid to the Taliban intended to be used for? (A) It was intended to stop Taliban's violent enforcement of the ban on opium poppies (B) Deal (C) The $245M was inteded for sending Humanitarian aid (D) Reducing the Gun homicides (E) Stabilizing the government (F) Coping with Taliban's violent actions. (G) Education (H) Humanitarian aid.
C.

Paragraph- Sent 1: Tuesday, September 11, 2001, dawned temperate and nearly cloudless in the eastern United States.
Sent 2: Millions of men and women readied themselves for work.
Sent 3: Some made their way to the Twin Towers, the signature structures of the World Trade Center complex in New York City.
Sent 4: Others went to Arlington, Virginia, to the Pentagon.
Sent 5: Across the Potomac River, the United States Congress was back in session.
Sent 6: At the other end of Pennsylvania Avenue, people began to line up for a White House tour.
Sent 7: In Sarasota, Florida, President George W. Bush went for an early morning run.
Sent 8: For those heading to an airport, weather conditions could not have been better for a safe and pleasant journey.
Sent 9: Among the travelers were Mohamed Atta and Abdul Aziz al Omari, who arrived at the airport in Portland, Maine.
Sent 10: Boston: American 11 and United 175.
Sent 11: Atta and Omari boarded a 6:00 A.M. flight from Portland to Boston's Logan International Airport.
Sent 12: When he checked in for his flight to Boston, Atta was selected by a computerized prescreening system known as CAPPS (Computer Assisted Passenger Prescreening System), created to identify passengers who should be subject to special security measures.
Sent 13: Under security rules in place at the time, the only consequence of Atta's selection by CAPPS was that his checked bags were held off the plane until it was confirmed that he had boarded the aircraft.
Sent 14: This did not hinder Atta's plans.
Sent 15: Atta and Omari arrived in Boston at 6:45.
Sent 16: Seven minutes later, Atta apparently took a call from Marwan al Shehhi, a longtime colleague who was at another terminal at Logan Airport.
Sent 17: They spoke for three minutes.
Sent 18: It would be their final conversation.
Question: How long was the phone call Between Atta and Marwan al Shehhi (A) 3 minutes (B) 1 minute (C) 2 minutes (D) 45 minutes.
A.