You will be given a definition of a task first, then some input of the task.
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").

Fact1: preventing the transfer of heat from an organims 's body causes that organism to keep warm, Fact2: Fur or feathers help hold heat in, but some body heat always escapes., Question: What does fur do? (A) it serves as food (B) refract or absorb. (C) It helps them survive (D) absorb light energy (E) it catches fire (F) it drowns the organism (G) structure and function (H) it keeps an organism warm
Output:
H