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: Aging occurs as cells lose their ability to divide., Fact2: Death is attributed to the infirmities of old age., Question: What occurs as cells lose their ability to divide? (A) illness (B) Winter (C) disease (D) death (E) youth (F) die (G) black holes (H) cell growth
Example Output: D

Example Input: Fact1: Testosterone stimulates the reproductive organs to develop into male organs., Fact2: Male mammals have a tube-like organ called the 'penis'., Question: what does testosterone stimulate reproductive tissues to develop? (A) penis (B) PDAs (C) A drug. (D) offspring (E) ovaries (F) Man (G) CO 2 (H) vagina
Example Output: A

Example Input: Fact1: a fire requires oxygen to burn, Fact2: If the oxygen is removed, the fire is smothered., Question: How do you put out a fire? (A) power (B) boiling (C) protect them (D) electrically (E) smother it (F) evaporation (G) mechanical (H) heating liquids
Example Output:
E