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 Input:
Fact1: Evolution occurs in response to a change in the environment., Fact2: Evolution Evolution is the changing pattern of life forms., Question: what happens in response to change in environment? (A) Plant growth is reduced (B) the wearing away of rock (C) lifeforms change their pattern (D) antimatter (E) density changes (F) Warm air moving into cold air (G) erosion from rivers (H) gravity changes

Ex Output:
C


Ex Input:
Fact1: vein deposits of gold and silver are formed by igneous intrusion, Fact2: Intrusive igneous rocks account for sections of higher elevation., Question: vein deposits of gold and silver are formed where? (A) loose soil (B) aqueous solution (C) graptolites (D) tectonic plates coliding (E) higher elevations (F) mountain sources (G) flow of electrons (H) In sediment

Ex Output:
E


Ex Input:
Fact1: Courtship is behavior that is intended to attract a mate., Fact2: Moose courtship begins in autumn., Question: When do moose begin to attract mates? (A) heat or cold (B) in autumn (C) colors (D) Change colors (E) it needs them (F) adding heat (G) Winter (H) competition

Ex Output:

B