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: energy is used for heating a building by a heating system, Fact2: Faculty offices are also in the building., Question: What contains energy to raise the temperture of an office? (A) chemical messengers (B) peachleaf willow (C) deoxyribonucleic acid (D) cooling system (E) swimming pool (F) heating system (G) gym (H) organic molecules
Example Output: F

Example Input: Fact1: Plants are the major producers in terrestrial biomes., Fact2: Grasses are very distinctive plants., Question: What is a producer in terrestrial biomes? (A) food (B) Oak (C) mammals (D) flowers (E) earth (F) grass (G) Trees (H) mushrooms
Example Output: F

Example Input: Fact1: Gametes then unite in fertilization and form a diploid zygote., Fact2: Syngamy produces a diploid zygote., Question: What is it called when when gametes unite in fertilization? (A) PDAs (B) pollen (C) seeds (D) Winter (E) autumn (F) offspring (G) a wave (H) Syngamy
Example Output:
H