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: RNA is a small molecule that can squeeze through pores in the nuclear membrane., Fact2: Like proteins, DNA and RNA are polymers of various small chemically related molecules., Question: polymers of various small chemically related molecules can squeeze through pores in the what? (A) protein channel (B) transportation (C) nuclear membrane (D) interior chambers (E) nucleus (F) dermal & vascular tissue (G) cell division (H) Microscopic vessels.
Example Output: C

Example Input: Fact1: Some arthropods have special excretory structures., Fact2: All insects are arthropods., Question: what sometimes has special excretory structures? (A) insects (B) bees (C) a fish (D) barnacles (E) animals (F) carbon (G) feces (H) humans
Example Output: A

Example Input: Fact1: Migrants typically travel long distances., Fact2: Manatees are a migrant species., Question: what typically travel long distances? (A) supersonic (B) spiders (C) humans (D) Cars (E) trains (F) ants (G) manatees (H) skateboards
Example Output:
G