Instructions: 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: Earthworm burrows help aerate soil, which is also good for plants., Fact2: Aeration quickly changes the chemistry of the soil., Question: What do earthworms do to soil? (A) Destroy soil (B) Damages them (C) Exfoliation (D) Converting waste. (E) competing for resources (F) Compact soil (G) Make soil denser (H) Change the chemistry
Output:
H