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: staying warm has a positive impact on an animal 's survival, Fact2: Furry animals grow thicker coats to keep warm in the winter., Question: Furry animals grow thicker coats which has what impact on their survival? (A) heat (B) positive (C) negative (D) energy (E) ironic (F) Energy. (G) decreased (H) adding heat
Example Output: B

Example Input: Fact1: a plants require water for survival, Fact2: Life-long learning is no longer a luxury for the few, but a survival skill for all., Question: Plants require what for life-long learning? (A) Light (B) protein (C) Energy. (D) gametes (E) genes (F) water (G) energy (H) oxygen
Example Output: F

Example Input: Fact1: Female monotremes lack a uterus and vagina., Fact2: Like the echidna, a platypus is a monotreme., Question: What does a platypus lack? (A) a cuticle (B) Uterus (C) tail fins (D) Eyes (E) Tail (F) Energy. (G) Energy (H) Heart
Example Output:
B