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: Cell division is how organisms grow and repair themselves., Fact2: Cell division is by mitosis ., Question: What is required by division? (A) voltage (B) Microscope (C) loose soil (D) Energy. (E) Energy (F) relocation (G) warmth (H) mitosis
[EX A]: H

[EX Q]: Fact1: Cells have multiple repair mechanisms to fix mutations in DNA., Fact2: DNA DNA is deoxyribonucleic acid., Question: Cells have multiple repair mechanisms to fix mutations in what? (A) Veins and arteries. (B) Most plants (C) the body's largest organ (D) members of their own species (E) wavelengths and photons (F) epidermis and dermis (G) deoxyribonucleic acid (H) peachleaf willow
[EX A]:
G