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").

Input: Consider 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

Output: B


Input: Consider Input: Fact1: seeing requires light, Fact2: Vision is our ability to see., Question: What is required for vision? (A) light (B) goggles (C) food (D) smell (E) hormones (F) Protein (G) color (H) hue

Output: A


Input: Consider Input: Fact1: seasons cause change to the environment, Fact2: Wildlife Habitat the native environment of an animal., Question: Seasons cause change to what of animals? (A) genetic material (B) species of offspring (C) native habitats (D) most organisms (E) color of nails (F) Quality of life (G) an external framework (H) shape of head


Output: C