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: Evolution occurs in response to a change in the environment., Fact2: Evolution Evolution is the changing pattern of life forms., Question: what happens in response to change in environment? (A) Plant growth is reduced (B) the wearing away of rock (C) lifeforms change their pattern (D) antimatter (E) density changes (F) Warm air moving into cold air (G) erosion from rivers (H) gravity changes
Example Output: C

Example Input: Fact1: when the seasons change from the summer to the fall , the amount of daylight will decrease, Fact2: Then the days become colder and the number of daylight hours decreases., Question: what do days become in fall? (A) rainy (B) ligt (C) cold (D) stormier (E) colder (F) hotter (G) longer (H) air cools
Example Output: E

Example Input: Fact1: protein is used to repair cells by the human body, Fact2: Proteins are essential to the structure and function of cells., Question: cells need to be what regularly to function properly (A) growth (B) hydration (C) repaired (D) rest (E) frozen (F) plugged in (G) enlarged (H) staying warm
Example Output:
C