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").
Q: Fact1: Many consumers feed at more than one trophic level., Fact2: Consumers include insects and animals., Question: What do many insects and animals feed at? (A) Something that makes plants green (B) only higher trophic levels (C) one consumer level (D) More than one trophic level. (E) organic matter (F) important habitats (G) Microscopic organisms (H) less than one trophic level
A:
D