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: Cancer is a disease that occurs when the cell cycle is no longer regulated., Fact2: Metastatic cancer is cancer that has spread., Question: a disease that can be metastic occurs when the cell cycle is regulated how often? (A) often (B) no less (C) forever (D) Leptospirosis (E) illness (F) heat or cold (G) no longer (H) electrically
Example Output: G

Example Input: Fact1: volcanic ash in the atmosphere decreases the temperature by blocking the sun, Fact2: Ash clouds are a particular problem for aircraft., Question: What are particular problems for aircraft in the atmosphere? (A) transportation (B) clog airways (C) extremely low humidity (D) volcanic clouds (E) feedback mechanisms (F) negative feedback (G) gas spreads in the air (H) very complex
Example Output: D

Example Input: Fact1: an animal needs to attract a mate to reproduce, Fact2: Pheromones have long been known to exist in animals, as scents that attract sex partners., Question: What are pheromones used for? (A) genetic diversity (B) Predators (C) gene flow (D) growth (E) Plant reproduction (F) Reproduction (G) Protection (H) Digestion
Example Output:
F