Definition: 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: Fact1: electric devices require electrical energy to function, Fact2: Computers are electronic devices that deal in pulses of electricity., Question: What requires electrical energy to function? (A) vehicles (B) A computer (C) A gas stove (D) A candle (E) Batteries (F) nervous system (G) critical organs (H) buses
Output:
B