Definition: 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").
Input: Fact1: Sweating reduces body heat., Fact2: Clothing reduces the effectiveness of sweating as a means of cooling the body., Question: What does taking off one's clothing improve the efficacy of? (A) recovery (B) hydration (C) Sweating (D) Modesty (E) Waterproofing (F) Exfoliation (G) Honesty (H) staying warm
Output:
C