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: if soil is permeable then water easily flows through that soil, Fact2: Sandy soils are permeable., Question: Water easily flows through what? (A) streams. (B) streams (C) coral reefs (D) sandy soils (E) aqueous solution (F) swamp vegetation (G) calcite (H) Sediment
Example Output: D

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: eyes are used for seeing by animals by sensing light, Fact2: Mammals are animals with a backbone., Question: What do mammals use eyes for? (A) to sense sound (B) to touch things (C) focusing a lens (D) it needs them (E) encoded information (F) to sense light (G) to sense smell (H) food and shelter
Example Output:
F