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: Evolution occurs in response to a change in the environment., Fact2: Evolution Evolution is the changing pattern of life forms., Question: what happens in response to change in environment? (A) Plant growth is reduced (B) the wearing away of rock (C) lifeforms change their pattern (D) antimatter (E) density changes (F) Warm air moving into cold air (G) erosion from rivers (H) gravity changes
[EX A]: C

[EX Q]: Fact1: cell division often causes growth, Fact2: Mitosis is cell division., Question: What often causes growth? (A) exercise (B) hormones (C) Atrophy (D) collagen (E) Earthworms (F) Apoptosis (G) Necrosis (H) Mitosis
[EX A]:
H