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: Abrasion is another type of weathering.
Sent 2: Like ice wedging, it is a form of mechanical weathering.
Sent 3: Like ice wedging, abrasion does not change the rock into another type of rock.
Sent 4: With abrasion, one rock or piece of sediment bumps against another rock.
Sent 5: Rocks dont normally roll around on their own, so why do they move?
Sent 6: There are a couple of reasons a rock may move.
Sent 7: Gravity can cause rocks to move.
Sent 8: They may roll downhill or fall off a cliff.
Sent 9: As they roll down a hill, they bump into each other.
Sent 10: Maybe a moving rock hits a rock that is not moving at the bottom of the hill.
Sent 11: Moving water causes rocks and sediment to move.
Sent 12: Rocks are bounced along the bottom and bump against one another.
Sent 13: As they collide, they begin to chip away at each other.
Sent 14: Angular rocks become more rounded with each collision.
Sent 15: Strong winds cause abrasion.
Sent 16: The wind carries sediment.
Sent 17: This sediment is thrown against other rocky surfaces by the wind.
Sent 18: It is like sand-blasting a rock.
Question: What two types of movement could gravity cause in rocks? (A) Collision (B) Levitation (C) Strong winds (D) They may roll downhill (E) To roll downhill or fall off a cliff (F) They may fall off a cliff (G) Circular motion.
[EX A]: D, E, F.

[EX Q]: Paragraph- Sent 1: (CNN) -- Air New Zealand's latest in-flight safety video, released Tuesday, is already another viral hit but is encountering some turbulence over its use of several bikini-clad Sports Illustrated models.
Sent 2: View the video here Previous versions of the video -- starring anything from Hobbits to Bear Grylls to New Zealand's all conquering All Blacks rugby team -- have revolutionized the on-board safety message airlines deliver to passengers.
Sent 3: The most recent effort though is being criticized by some as neither ground-breaking nor as creative, after the airline teamed up with Sports Illustrated magazine to produce what it's calling "The world's most beautiful safety video."Sent 4: The "Safety in Paradise" video, which rolls out on Air New Zealand flights at the end of February, is beautifully shot and certainly cheerful and fun.
Sent 5: It was filmed in the Cook Islands -- home to several stunning beaches -- and coincides with the 50th anniversary of Sports Illustrated's Swimsuit franchise.
Sent 6: Earlier videos have been witty, clever and quirky but the paradise video combines a far less subtle use of eye-catching material -- using four of the planet's most beautiful, and scantily clad women, to deliver information to passengers.
Sent 7: The models include Ariel Meredith, Chrissy Teigen, Hannah Davis and Jessica Gomes.
Sent 8: Christie Brinkley makes a cameo.
Sent 9: "It seems that suddenly they are saying that my sexuality is all that matters about me," one critic, Massey University lecturer and feminist commentator Deborah Russell told the Sydney Morning Herald.
Sent 10: Social media reaction to the video was predictably mixed, though the majority of commenters on Facebook and Twitter appeared to support the video -- and the women in it.
Sent 11: Many praised Air New Zealand for using beautiful women to promote the Cook Islands and complimented the airline on its marketing prowess, given the mass of media attention now being given to the safety video.
Sent 12: From the negative corner, while some commented they were appalled Air New Zealand would be so sexist, others said the Sports Illustrated version just isn't all that clever -- a disappointing follow up to the airline's creative safety videos of the past.
Question: Which airline teamed up with Sports Illustrated magazine in order to produce a safety video? (A) Lufstansa (B) Asian Airlines (C) AeroFrance (D) Air New Zealand.
[EX A]: D.

[EX Q]: Paragraph- Sent 1: We need natural resources for just about everything we do.
Sent 2: We need them for food and clothing, for building materials and energy.
Sent 3: We even need them to have fun.
Sent 4: Table 2.1 gives examples of how we use natural resources.
Sent 5: Can you think of other ways we use natural resources?
Sent 6: Use Vehicles Resources Rubber for tires from rubber trees Steel frames and other metal parts from minerals such as iron Example iron ore Electronics Plastic cases from petroleum prod- ucts Glass screens from minerals such as lead lead ore Use Homes Resources Nails from minerals such as iron Timber from trees Example spruce timber Jewelry Gemstones such as diamonds Minerals such as silver silver ore Food Sunlight, water, and soil Minerals such as phosphorus corn seeds in soil Clothing Wool from sheep Cotton from cotton plants cotton plants Recreation Water for boating and swimming Forests for hiking and camping pine forest Some natural resources are renewable.
Sent 7: Others are not.
Sent 8: It depends, in part, on how we use them.
Question: Are natural resources renewable? (A) Some aren't (B) Always (C) Some are, some aren't, depending on how we use them.
[EX A]:
A, C.