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: Humans have collected and grown mushrooms for food for thousands of years., Fact2: Yeast and mushrooms are types of fungus., Question: What have humans collected and grown for thousands of years? (A) Organic compounds (B) types of coral (C) types of ferns (D) bioaerosols (E) Most plants (F) types of fungus (G) types of pine trees (H) peachleaf willow
Example Output: F

Example Input: Fact1: if gas is heated then that gas will expand, Fact2: An increase in temperature causes a gas to expand., Question: what affects a gas? (A) electricity (B) kinetic energy (C) temperature (D) Evaporation (E) salinity (F) Pollution (G) wind (H) magnetism
Example Output: C

Example Input: Fact1: Phytoplankton are bacteria and algae that use sunlight to make food., Fact2: Phytoplankton, or plant plankton, needs sunlight to live, the same way plants on land do., Question: What does plant plankton need for food? (A) Sunlight (B) chemicals (C) glucose (D) warmth (E) Bodily water (F) photons (G) The Sun (H) Energy
Example Output:
A