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").

Example Input: Fact1: Biomass is the total mass of organisms at a trophic level., Fact2: Producers make up the first trophic level, primary consumers the second, and so on., Question: What is the total mass of primary consumers (A) Plants (B) animals (C) food (D) Mountains (E) Biomass (F) decreases (G) all matter (H) Weight
Example Output: E

Example Input: Fact1: All chemical reactions require activation energy to get started., Fact2: Chemical changes are a result of chemical reactions., Question: What is required before a chemical change? (A) kinetic energy (B) energy usage (C) activation push (D) activation energy (E) activation switch (F) activation power (G) Burning fuel and air (H) Evaporation
Example Output: D

Example Input: Fact1: exercise has a positive impact on a human 's health, Fact2: And the benefits of running, or any other form of exercise, are enormous., Question: What has a positive effect on human health? (A) hormones (B) scrambling (C) scurrying (D) nutrients (E) sweating (F) Glucose (G) panicking (H) running
Example Output:
H