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: cross-pollination increases genetic diversity, Fact2: Evolution requires genetic diversity., Question: What does evolution require? (A) Time and energy (B) Plant reproduction (C) cross-pollination (D) Reproduction (E) gene flow (F) coded genes (G) circulatory systems (H) animals with backbones
Example Output: C

Example Input: Fact1: knowledge of the stars can be used to navigate, Fact2: Explorers have used the North Star for navigational purposes for centuries., Question: What can be used to find your way if you're lost in the dark? (A) lamphreys (B) Ultraviolet shielding (C) Light shining into it (D) the speed of hearing (E) The north star (F) How to check the temperature (G) Observing tidal waves (H) osculum
Example Output:
E