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: Consider Input: Fact1: acid rain has a negative impact on water quality, Fact2: Sulfur dioxide causes acid rain., Question: What has a negative impact on water quality? (A) Reverse osmosis (B) fossil fuels (C) Fresh water (D) Carbon filter (E) chlorofluorocarbons (F) Sulfur dioxide (G) Pollution (H) harmful substances

Output: F

Input: Consider Input: Fact1: Glucose is used for energy by the cells of most organisms., Fact2: Glucose, the sugar the body uses for fuel, is stored as glycogen., Question: What is sugar stored as by the body? (A) heat energy (B) sun's heat (C) A drug. (D) A kernel (E) energy (F) glycogen (G) lmestone (H) Hemoglobin

Output: F

Input: Consider Input: Fact1: Fish have a circulatory system with a two-chambered heart., Fact2: Trout is an extremely versatile fish., Question: what have a circulatory system with a two-chambered heart? (A) toads (B) Birds (C) trout (D) animals (E) sharks (F) pan (G) mammals (H) salmon
Output: C