Definition: 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").
Input: Fact1: an aquatic animal requires great amounts of water to survive, Fact2: Too much algae can deplete the water of oxygen, making it impossible for aquatic animals to survive., Question: an aquatic animal requires not having too much what in water? (A) warmth (B) Energy. (C) energy (D) fats (E) algae (F) matter (G) harm (H) sodium
Output:
E