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: heat can change the state of matter, Fact2: Matter exists in a solid, liquid or gas state and can change forms., Question: _ can change liquid to gas. (A) magnetism (B) cycles (C) energy (D) vapors (E) condensation (F) gravity (G) thirst (H) Heat
[EX A]: H

[EX Q]: Fact1: Annelids have the amazing capacity to regrow segments that break off., Fact2: Earthworms Earthworms are in the phylum Annelids., Question: _ have the amazing capacity to regrow segments. (A) ferns (B) arachnids (C) roots (D) earthworms (E) anthropods (F) crustacean (G) loose soil (H) root growth
[EX A]: D

[EX Q]: Fact1: Mutations may change the structure of a chromosome or just change a single nucleotide., Fact2: Mutagenic chemicals cause mutations., Question: What may change the structure of a nucleotide? (A) oxidation reaction (B) adding heat (C) Water (D) Name (E) Mutagenic chemicals (F) permineralization (G) Air (H) that material's properties
[EX A]:
E