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").

[EX 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
[EX A]: G

[EX Q]: Fact1: a ship is used for moving people across bodies of water, Fact2: An ocean is a large body of water., Question: What is used to move people across an ocean? (A) A wagon (B) A wave (C) energy (D) wind (E) oil (F) dolphins (G) A ship (H) A catapult
[EX A]: G

[EX Q]: Fact1: heat can change the state of matter, Fact2: Liquids are one state of matter., Question: what can change a substance to a liquid (A) Heat (B) NaCl (C) mixing (D) filling container (E) storms (F) energy (G) vapors (H) spraying
[EX A]:
A