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: All life relies on a relatively narrow range of pH, or acidity., Fact2: Human life is dependent life., Question: what relies on a relatively narrow range of acidity? (A) gravity (B) mammals (C) animals (D) trees (E) humans (F) density (G) volume (H) potatoes
[EX A]: E

[EX Q]: Fact1: Populations of viruses do not grow through cell division because they are not cells., Fact2: Prokaryotes multiply by simple cell division, forming clones or exact copies of themselves., Question: What are viruses not? (A) self-copies (B) an object (C) HIV (D) humans (E) infectious (F) homogenous (G) dangerous (H) prokaryotes
[EX A]: H

[EX Q]: Fact1: if a living thing becomes too cold then that living thing will die, Fact2: Every year people die from hypothermia in Alaska when the temperature is above freezing., Question: What do we experience when we get too cold? (A) Hibernation (B) sweating (C) Dehydration (D) Hypothermia (E) Extreme hunger (F) Pollution (G) hyperthyroidism (H) Dangerous weather
[EX A]:
D