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: fire converts chemical energy into light and heat energy, Fact2: Fire is a natural energy source which provides heat, light and energy., Question: what does fire provide? (A) warmth (B) fuel (C) light (D) water (E) ice (F) air (G) oxygen (H) cells
C