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: Organisms use lipids to store energy., Fact2: Plants and animals are organisms., Question: What do animals use for energy storage? (A) photosynthesis (B) sweating (C) vitamin C (D) batteries (E) methane (F) glucose (G) sugar (H) lipids
H