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: Caffeine is a central nervous system stimulant., Fact2: Cocaine is a stimulant and increases the user's heart rate and blood pressure., Question: What does caffeine do? (A) Increase fame (B) increases a body's strength (C) Release energy (D) Increase user's heart rate (E) Transfers energy (F) decrease stamina (G) Increase intelligence (H) Increase wealth
Example Output: D

Example Input: Fact1: Plasma cells are activated B cells that secrete antibodies., Fact2: Antibodies are produced by plasma cells., Question: antibodies are produced by activated B cells that do what? (A) Animal survival (B) killing insects (C) interact (D) secrete them (E) migrate (F) reproduce (G) competition (H) Allergies
Example Output: D

Example Input: Fact1: Chemical digestion occurs mainly in the small intestine., Fact2: Lactobacillus is present in the small intestine., Question: What aids chemical digestion? (A) amount of heat (B) dandelions (C) several genes (D) flagella (E) lactobacillus (F) a hosta (G) melanin content (H) holding nutrients
Example Output:
E