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: 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: 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: Mammals have a layer of fat under the skin to help insulate the body., Fact2: Of the sea mammals, especially the seal and walrus are hunted., Question: What has a layer of fat under the skin to help insulate the body? (A) walruses (B) bears (C) the Sun (D) water (E) rabbit (F) ice (G) animals (H) humans
Example Output:
A