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: decomposition increases amount of organic matter in soil, Fact2: Composting is simply the natural decomposition of organic matter., Question: What creates compost? (A) green manures (B) eukyarotes (C) haploid plants (D) Most plants (E) chemical reaction (F) peachleaf willow (G) some invertebrates (H) Decomposition
H