Q: 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").
Fact1: All life relies on a relatively narrow range of pH, or acidity., Fact2: If the pH level is higher or lower, aquatic life is endangered., Question: What happens to aquatic life if acidity is higher or lower than a narrow range? (A) Plant growth is reduced (B) They may not survive. (C) Aquatic life sinks (D) harm them (E) It is endangered (F) Damages them (G) Aquatic life moves to dry land (H) Aquatic life flourishes
A:
E