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: Energy enters ecosystems in the form of sunlight or chemical compounds., Fact2: Biomes are global ecosystems., Question: Where does energy enter into in the form of sunlight and chemical compounds? (A) sun (B) science lab (C) biomes (D) orchids (E) photons (F) deserts (G) black hole (H) trees
Output:
C