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: Sweating reduces body heat., Fact2: Excessive perspiration occurs and sweat glands become active., Question: what reduces body heat? (A) Electrical energy (B) with their fur (C) fur and fat (D) Evaporation (E) blankets (F) perspiration (G) fire (H) electrons
A:
F