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: gills are used for breathing water by aquatic animals, Fact2: Much like a fish, the Mussel has little gills., Question: Which can breath in the water? (A) whale (B) sharks (C) fish (D) clams (E) beaver (F) Frogs (G) squids (H) snake
Output:
C