Detailed 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").
Q: Fact1: Mollusks are a major food source for other organisms, including humans., Fact2: Mollusks in the diorama include snails and clams., Question: What are a major food source to organisms including humans? (A) leeches (B) earthworms (C) snails (D) plants (E) tapeworms (F) trees (G) potatoes (H) bushes
A:
C