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: electricity is used as an energy source by electrical devices, Fact2: Electrical fields result from electrical devices and televisions., Question: What is used as an energy source by television? (A) electricity (B) light (C) our nearest star (D) air (E) energy (F) satellites (G) photons (H) rocks
Example Output: A

Example Input: Fact1: Mutations are essential for evolution to occur., Fact2: Mutations are changes in the DNA sequence., Question: What is essential for evolution to occur? (A) Changes in DNA sequences (B) Plant reproduction (C) Natural disasters (D) Gamma radiation (E) biological diversity (F) DNA sequences staying the same (G) the environment (H) that material's properties
Example Output: A

Example Input: Fact1: a mold spore has a negative impact on the respiratory system, Fact2: Spores are distributed by the wind., Question: The wind has a negative impact on what? (A) the respiratory system (B) agriculture (C) most organisms (D) members of their own species (E) movements in the earth's crust (F) they body they live in (G) energy usage (H) one celled organisms
Example Output:
A