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: Cells are programmed to divide only a set number of times., Fact2: Cells reproduce asexually, by dividing., Question: Cells are programmed to _  only a set number of times. (A) migrate (B) expand (C) A computer (D) Most plants (E) allow growth (F) reproduce (G) contract (H) constrict
Example Output: F

Example Input: Fact1: Roundworms may be free-living or parasitic., Fact2: Roundworms make up the roundworm phylum, Nematoda., Question: What can the phylum Nematoda be? (A) dangerous (B) parasitic (C) horses (D) meiosis (E) more abundant (F) graptolites (G) homogenous (H) phytoplankton
Example Output: B

Example Input: Fact1: adding salt to a solid decreases the freezing point of that solid, Fact2: Salt is sodium chloride., Question: Adding sodium chloride to a solid does what? (A) chemical reaction (B) decreases the freezing point (C) a hemisphere is tilted away from the sun (D) heat production (E) reusing materials (F) water conservation (G) It gets heated up (H) massive damage
Example Output:
B