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: Earthworms are important deposit feeders that help form and enrich soil., Fact2: Tulips perform best in a sandy, organically enriched soil., Question: Earthworms help form and add what to soil (A) Sediment (B) organic material (C) Converting waste. (D) bacteria (E) heat (F) Chemical energy (G) grass (H) acidity
Example Output: B

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: coal is used for generating heat by burning, Fact2: Coal and lignite are the lithified remains of plants., Question: What are the lithified remains of plants used for? (A) heat production (B) generating heat by burning (C) harvesting crops (D) damming rivers (E) food and shelter (F) heat is produced (G) A transportation fuel (H) planting seeds
Example Output:
B