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 have a layer of fat under the skin to help insulate the body., Fact2: Pugs are mammals and mammals shed., Question: what have a layer of fat under the skin? (A) Birds (B) humans (C) trees (D) pugs (E) mounds (F) cats (G) otters (H) bones
Output:
D