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: having food has a positive impact on an organism 's health, Fact2: For the food of bread is daily food., Question: having bread daily has a positive impact on some organism 's what (A) shelter (B) environment (C) growth (D) survive (E) nutrients (F) health (G) humans (H) habitat
Example Output: F

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: conserving water can be used for survival in a dry environment, Fact2: Many cacti have corrugated stems which can expand quickly if water becomes available., Question: What feature of many cacti help them survive in dry environments? (A) exoskeleton (B) Spines for hunting (C) Expandable stems (D) an external framework (E) cactuses (F) Cooling pipes (G) genetic diversity (H) Loud organ pipes
Example Output:
C