Detailed 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").
Problem:Fact1: Hair is a fiber that is found only in mammals., Fact2: Bats have hair like all mammals so they can stay warm., Question: What keeps mammals warm? (A) fibers (B) eyeballs (C) white blood cells (D) fur (E) the skin (F) sweating (G) nostrils (H) heat
Solution:
A