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: Ozone depletion results in higher levels of UV radiation reaching Earth., Fact2: Birds live on Earth, trees live on Earth., Question: what results in higher levels of uv radiation reaching the place birds and trees live? (A) emissions (B) earthquakes (C) oxidation reaction (D) ozone depletion (E) global warming (F) important habitats (G) fairies (H) the ozone layer strengthening

Output: D


Input: Consider Input: Fact1: Viruses are so small that they can be seen only with an electron microscope., Fact2: Electron microscopes are needed to see viruses., Question: What can viruses be seen with? (A) eye (B) A computer (C) magnifying glass (D) microscope (E) the skin (F) radiation (G) Chemical energy (H) glasses


Output: D