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: a stopwatch is used to measure time, Fact2: Reaction time was measured with a stopwatch in minutes and seconds., Question: What is used to measure minutes? (A) light (B) barometer (C) stopwatch (D) weater (E) thermometer (F) lamphreys (G) feedback (H) sound
Example Output: C

Example Input: Fact1: a light bulb is used for seeing in the dark, Fact2: Light is emitted by a light bulb., Question: What is required for seeing? (A) dark (B) sun (C) light (D) wind (E) retina (F) eyes (G) photons (H) copper
Example Output: C

Example Input: Fact1: Most people can survive only a few days without water., Fact2: Water controls the body's temperature., Question: Most people can survive only a few days without controlling the body's what? (A) temperature (B) ideas (C) oxygen (D) menace (E) energy (F) it's state (G) Energy. (H) movement
Example Output:
A