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: eyes are used for seeing by animals by sensing light, Fact2: Goats are four legged animals., Question: what uses eyes for seeing by sensing light? (A) pigeons (B) goats (C) potatoes (D) tigers (E) plants (F) h2o (G) humans (H) bears

Ex Output:
B


Ex Input:
Fact1: wiring requires an electrical conductor, Fact2: Wires connected to a source of electricity., Question: An electrical conductor is required for the operation of: (A) water current (B) electricity (C) satellites (D) energy (E) to move people (F) gas lamps (G) trains (H) lightning

Ex Output:
B


Ex Input:
Fact1: Fish have a centralized nervous system with a brain., Fact2: Brains are for important tasks, like thinking., Question: What can think? (A) fish (B) mountain (C) Bats (D) tree (E) humans (F) Man (G) rock (H) Birds

Ex Output:

A