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: some animals' fur grows thicker for staying warm in the winter, Fact2: During winter, their hollow fur absorbs much heat as they sun themselves., Question: hollow fur keeps animals what (A) fats (B) camouflaged (C) safe (D) warm (E) cooled (F) liquid (G) live (H) from drowning
[EX A]: D

[EX Q]: Fact1: Mutualism is a symbiotic relationship in which both species benefit., Fact2: Dogs and humans are symbiotic species., Question: what exists between dogs and humans? (A) mutualism (B) gravity (C) communication (D) antigens (E) several genes (F) space between (G) electrons (H) german shepherd
[EX A]: A

[EX Q]: Fact1: thirst is used to make an animal realize that it needs to replenish its bodily water by the body, Fact2: Water hydrates the cells., Question: Thirst is used to make animals realize they need to what? (A) remove their cells (B) filter their beverages (C) recovery time from fatigue (D) reusing things (E) moisturize their eyes (F) hydrate their cells (G) Converting waste. (H) they body they live in
[EX A]:
F