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: an animal requires nutrients for survival, Fact2: Animals and humans eat plants for their nutrients., Question: What can a small animal eat in a day for survival? (A) Part of a plant. (B) some invertebrates (C) Nutrient rich soil. (D) deoxyribonucleic acid (E) Paper from a plant. (F) food and shelter (G) A whole tree. (H) organic molecules
A