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: erosion causes a river to become deeper and wider, Fact2: Weathering and erosion continue to shape it today., Question: Weathering causes what to become deeper and wider? (A) a landslide (B) Sediment (C) a mountain (D) a volcano (E) soils (F) rock (G) flooding (H) a river
Example Output: H

Example Input: Fact1: Many consumers feed at more than one trophic level., Fact2: Consumers are heterotrophs that feed on tissues of other organisms., Question: What may eat other organisms at more than one trophic level? (A) barnacles (B) chickens (C) fur seals (D) humans (E) heterotrophs (F) mammals (G) animals (H) rabbit
Example Output: E

Example Input: Fact1: a battery converts chemical energy into electrical energy, Fact2: Battery life is several months for a AA lithium cell., Question: what converts chemical energy into electrical energy (A) sensory neurons (B) AA lithium cell (C) rotten food (D) Firecrackers (E) an engine (F) deoxyribonucleic acid (G) magnets (H) plants
Example Output:
B