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: astronauts require preserved food for extended flights, Fact2: Most of the Shuttle foods are preserved by dehydration, which saves weight and storage space., Question: astronauts require what food for extended flights? (A) Echinoderm. (B) layers of fat (C) dehydrated (D) fresh (E) hand picked (F) nutrients (G) frozen (H) hydration
Example Output: C

Example Input: Fact1: All plants have a characteristic life cycle that includes alternation of generations., Fact2: Plants have chlorophyll and an alternation of generations ., Question: What have chlorophyll and a characteristic life cycle? (A) vases (B) Fungi (C) models (D) Trees (E) Conifers (F) plants (G) seeds (H) greenhouses
Example Output: F

Example Input: Fact1: Amphibians are the first true tetrapods, or vertebrates with four limbs., Fact2: All vertebrates more advanced than fish have four limbs, each with up to five fingers or toes., Question: Amphibians with what are more advanced than fish? (A) four eyes (B) sensory neurons (C) rapid expansion (D) layers of fat (E) four limbs (F) kinetic energy (G) tails (H) many limbs
Example Output:
E