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").

Input: Consider Input: Fact1: a battery converts chemical energy into electrical energy, Fact2: Electricity is a form of energy and is sometimes called electrical energy., Question: How does a battery work? (A) dormant state (B) hydrogen and oxygen (C) Throwing it away (D) Charging it (E) It converts power (F) Plugging it in (G) It remains dormant (H) to move people

Output: E

Input: Consider Input: Fact1: when a metal rusts , that metal becomes orange on the surface, Fact2: Cast-iron and steel surfaces are susceptible to corrosion in the form of rust., Question: Cast-iron and steel surfaces are susceptible to becoming what on the surface? (A) hardness (B) solid (C) irritants (D) acids (E) orange (F) heat (G) Unsafe (H) damaging

Output: E

Input: Consider Input: Fact1: an animal needs to attract a mate to reproduce, Fact2: Animals reproduce by having young., Question: Why do animals have mates? (A) food and shelter (B) it needs them (C) to have young (D) genetic diversity (E) to be happy (F) to get married (G) to survive (H) Reproduction
Output: C