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: Most people can survive only a few days without water., Fact2: Water is the best fluid for hydration., Question: What can people only survive a few days without? (A) dehydration (B) hydration (C) bacteria (D) sodium (E) food (F) yogurt (G) Chlorophyll (H) oxygen
Example Output: B

Example Input: Fact1: a light bulb converts electrical energy into light energy when it is turned on, Fact2: Light bulbs are rated in Watts., Question: How is converted energy into light energy rated? (A) energy (B) unique (C) heat (D) good (E) watts (F) parsec (G) kilojoule (H) kinetic energy
Example Output: E

Example Input: Fact1: vinegar can cause harm to the eyes, Fact2: Rice Vinegar Vinegar made from fermented rice., Question: What can cause harm to the eyes? (A) fissures of hot, acidic water (B) Mutagenic chemicals (C) electromagnetic energy (D) a hemisphere is tilted away from the sun (E) Something made from fermented ricce (F) DNA damage and mutations (G) volatile substances (H) decomposing dead organisms
Example Output:
E