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: Mutations may change the structure of a chromosome or just change a single nucleotide., Fact2: SNPs involve polymorphisms at the single nucleotide level., Question: What is a potential outcome of genetic mutation? (A) HIV (B) albino (C) anemia (D) pizza eating turtles (E) genealogy (F) SNPs (G) biology (H) death
Example Output: F

Example Input: Fact1: Bone provides protection for soft tissues and internal organs., Fact2: Antlers are true bones and are composed of calcium and phosphorous., Question: What provides protection for soft tissues and internal organs? (A) bacteria (B) Veins and arteries. (C) Fully cooking the oysters (D) layers of fat (E) calcium and phosphorous (F) water (G) peachleaf willow (H) the trachea
Example Output: E

Example Input: Fact1: a light bulb is used for seeing in the dark, Fact2: Anyone who looks, eventually sees., Question: What can be used for looking around in the dark? (A) a microscope (B) a light bulb (C) Electrical energy (D) binoculars (E) focusing a lens (F) bushes (G) glasses (H) electricity
Example Output:
B