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").

[EX Q]: 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
[EX A]: F

[EX Q]: Fact1: being burried under soil and mud changes peat into coal through extreme heat and pressure in a swamp over a long period of time, Fact2: Well, a swamp is a type of wetland., Question: where does being buried under soil and mud change peat into coal through extreme heat and pressure over a long period of time? (A) watershed (B) alluvial (C) wetland (D) deltas (E) erosion (F) houses (G) earth (H) lakes
[EX A]: C

[EX Q]: Fact1: Echinoderms lack a centralized nervous system., Fact2: Starfish and sea urchins are also echinoderms., Question: What lacks a centralized nervous system? (A) Damaged hearing (B) Pesticides (C) Cats (D) insects (E) Sea urchins (F) barnacles (G) Humans (H) Fish
[EX A]:
E