Detailed Instructions: 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: a doorbell converts electrical energy into sound, Fact2: Hearing is the act of perceiving sound., Question: What converts electrical energy into what we hear? (A) a doorbell (B) sensory neurons (C) a solar panel (D) a battery (E) Firecrackers (F) waves (G) a water pump (H) engines
A:
A