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: creating paper requires cutting down trees, Fact2: Deforestation takes place when trees are cut down in the rainforest., Question: What can cause deforestation? (A) Planting flowers (B) Creating paper (C) Greenhouse gases (D) Filtering water (E) Greenhouse gasses (F) Cutting grass (G) Pesticides (H) Pollution
Example Output: B

Example Input: Fact1: Passive immunity lasts only as long as the antibodies survive in body fluids., Fact2: Furthermore, antibody levels decrease with time., Question: Passive immunity decreases with (A) ozone depletion (B) edema (C) passive-aggressive behavior (D) stellar implosion (E) stress (F) HIV (G) time (H) death
Example Output:
G