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: Hair helps to insulate and protect the body., Fact2: Hair is built by the hair follicle from dead proteins produced by skin cells called keratin., Question: What from dead proteins help to insulate and protect the body? (A) follicles (B) bioaerosols (C) Energy (D) sweating (E) fossil fuels (F) layers of fat (G) fur and fat (H) fungi
A:
A