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: Mammals conserve body heat with their hair or fur., Fact2: Dogs, of course, are mammals., Question: How do dogs conserve body heat? (A) their blood cells (B) fur and fat (C) their nails (D) layers of fat (E) Exfoliation (F) sweating (G) their fur (H) their hair
Output:
G