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: a battery converts chemical energy into electrical energy, Fact2: Electrical energy can be converted into kinetic energy and heat energy by an electric motor., Question: What can convert chemical energy into kinetic energy (A) a magnet (B) a vacuum (C) a windmill (D) a battery (E) arteries (F) barnacles (G) animals (H) engines
Example Output: D

Example Input: Fact1: Biodiversity generally increases from the poles to the equator., Fact2: Biodiversity is equated with the number of different organisms present in a habitat ., Question: What increases in habitats from the poles to the equator? (A) The number of individuals (B) sub-units of species (C) the Arctic (D) different organisms' numbers (E) ice (F) biological diversity (G) penguins (H) heat and light
Example Output:
D