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: Tunicates reproduce sexually., Fact2: Bulbs are classifies as tunicate or non-tunicate., Question: How many ways can a bulb reproduce? (A) LEDs (B) Two (C) Many (D) wind (E) well (F) 12 (G) bent (H) tube
Example Output: B

Example Input: Fact1: global warming is when worldwide temperature increases, Fact2: Mass extinction occurs in the ice age and global warming periods., Question: When worldwide temperature increases, mass what occurs? (A) extinction (B) deforestation (C) carbon (D) ice age (E) living (F) movement (G) It decreases (H) Pollution
Example Output: A

Example Input: Fact1: Mutations are essential for evolution to occur., Fact2: Viruses can cause a mutation in a gene., Question: What can cause evolution to occur? (A) heat (B) viruses (C) alleles (D) pollen (E) Pesticides (F) extinction (G) A computer (H) animals
Example Output:
B