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: decomposition increases the amount of nutrients in the soil, Fact2: Bacteria and fungi are involved in the decomposition., Question: What can increase the amount of nutrients in the soil? (A) roots (B) wind (C) worms (D) Fungi (E) Enzymes (F) corn (G) trees (H) mussels
Output:
D