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: Each stage is a trophic level., Question: The total mass of organisms in an environmental stage is called what? (A) food pyramid (B) extinction (C) ecological pyramid (D) food chain (E) vegetation (F) food (G) ligt (H) biomass
Example Output: H

Example Input: Fact1: soil erosion means soil loss through wind, Fact2: Hurricanes are made of wind., Question: What is soil erosion? (A) enormous damage to homes (B) movements in the earth's crust (C) soil regrowth (D) massive damage (E) soil fertilization (F) soil loss through hurricanes (G) soil loss through human works (H) fissures of hot, acidic water
Example Output: F

Example Input: Fact1: bacteria cause food to spoil, Fact2: Bacteria love a warm, moist place to grow., Question: Food often spoils when stored in an environment that is warm and __. (A) has great air circulation (B) dry (C) mild (D) wet (E) liquid (F) cold (G) heat (H) moist
Example Output:
H