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: soil is formed by rocks eroding, Fact2: Rivers erode the rocks they flow over., Question: What is formed by rivers? (A) fish (B) soil (C) rain (D) bamboo (E) spring (F) clouds (G) kayaks (H) NaCl
Example Output: B

Example Input: Fact1: the Himalayas were formed by rock folding, Fact2: If the rocks are not as brittle, they will either tilt or fold., Question: What is the consistency of the Himalayan rocks? (A) crust (B) Loose (C) simple (D) cold (E) loose soil (F) Smooth (G) liquid (H) Brittle
Example Output: H

Example Input: Fact1: Most amphibians breathe with gills as larvae and with lungs as adults., Fact2: Salamanders are a type of amphibian., Question: what breathes with gills as larvae and lungs as adults? (A) salamanders (B) animals (C) respiration (D) gastropod shells (E) fish (F) h2o (G) insects (H) it needs them
Example Output:
A