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: coal is used for generating heat by burning, Fact2: Gasoline is extremely flammable and can explode and burn if ignited., Question: coal is used for generating heat and can what? (A) melt (B) explode (C) run (D) kill (E) heat (F) energy (G) stay warm (H) freeze

A: B
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Q: Fact1: shelter is used for protection by animals against weather, Fact2: Many animals use sponges for shelter., Question: What can animals use for protection? (A) hair (B) bushes (C) keratin (D) food (E) shells (F) appendages (G) energy (H) sponges

A: H
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Q: Fact1: Some insects can use their antennae to detect sound., Fact2: Aphids are soft-bodied insects with relatively long legs and antennae., Question: What do aphids use to detect sound? (A) antennae (B) electricity (C) sonar (D) Energy (E) waves (F) lmestone (G) ears (H) whiskers

A:
A
****