Given the task definition and input, reply with output. 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").

Fact1: a windmill converts wind energy into electricity primarily by using mechanical energy, Fact2: Todays computers use electricity and silicon chips., Question: What can a windmill provide energy for? (A) space (B) water (C) animals (D) humans (E) A computer (F) clouds (G) energy (H) engines
E