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").

[EX Q]: Fact1: keeping food cold is used for keeping food fresh, Fact2: A refrigerator that keeps food cold., Question: What is a refrigerator used for? (A) Electrical energy (B) A place to hang magnets (C) Cooling your home (D) staying warm (E) A doorstop (F) electricity (G) energy usage (H) Keeping food fresh
[EX A]: H

[EX Q]: Fact1: vinegar can cause harm to the eyes, Fact2: Vinegar is dilute acetic acid., Question: What can acetic acid do to the eyes? (A) treat cataracts (B) harm them (C) Relieve pain (D) Dehydration (E) kill them (F) hydrate them (G) protect them (H) cleanse them
[EX A]: B

[EX Q]: Fact1: Sweating reduces body heat., Fact2: Sweat cools the body by evaporation, which removes heat from the body surface., Question: How does sweating cool the body? (A) Riding a bike (B) all liquids (C) layers of fat (D) staying warm (E) evaporation (F) Animal survival (G) matter vibrating (H) hydration
[EX A]:
E