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: keeping food cold is used for keeping food fresh, Fact2: Keep your food fresh, simple and as natural as possible., Question: What is used to keep foods as simple and as natural as possible? (A) Energy (B) sodium (C) lipids (D) heat (E) RNA (F) cold (G) fibers (H) sugar
Output:
F