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: Mammals have a layer of fat under the skin to help insulate the body., Fact2: An extra layer of fat also helps protect the polar bear from the cold., Question: What does a polar bear have to insulate its body? (A) white (B) Cold blood (C) Less fat (D) Warm blood (E) environment (F) Bodily water (G) Extra fat (H) Animal fur
A:
G