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: 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

Output: H


Input: Consider Input: Fact1: Reproduction is the process by which organisms give rise to offspring., Fact2: Then, the lowest energy offspring are used as parents for the next generation., Question: The next generation of an organism rises via: (A) Plants growth (B) spontaneous generation (C) reproduction (D) The Sun (E) revolution (F) sun's heat (G) heat energy (H) unions

Output: C


Input: Consider Input: Fact1: cycles of freezing and thawing water cause ice wedging, Fact2: Ice wedging is the most important form of mechanical weathering., Question: Freezing and thawing cause what type of weathering? (A) loose soil (B) climate (C) mechanical (D) flooding (E) Sediment (F) rivers (G) Metling snow (H) Winter


Output: C