In this task, you are given two facts, and a multiple-choice question. Based on the given facts, answer the question with index of the correct option (e.g, "A").

[Q]: Fact1: moss causes chemical weathering, Fact2: Mosses Mosses are flowerless plants that grow in clumps., Question: What can cause chemical weathering? (A) Calcium carbonate (B) our nearest star (C) global warming (D) sea squirts (E) swamp vegetation (F) single-celled organisms (G) flowerless plants (H) Earthworms
[A]: G

[Q]: Fact1: rain causes erosion, Fact2: Erosion of dunes leads to erosion of the beach and of the Island., Question: What can destroy dunes? (A) wind (B) fire (C) turtles (D) storms (E) clams (F) heat (G) rain (H) grain
[A]: G

[Q]: Fact1: a prism is used for refracting light, Fact2: Refraction is the bending of a ray of light., Question: What tool can be used to bend rays of light? (A) Compass (B) a wave (C) fibers (D) Magnet (E) Pliers (F) Prism (G) forces (H) Newton
[A]:
F