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: Molecules of DNA are encoded with instructions that tell cells what to do., Fact2: Genes, made of DNA, carry the instructions for building proteins., Question: what do genes carry? (A) pollen (B) Energy (C) calories (D) instructions (E) Chemical energy (F) fat (G) acid (H) colors
[EX A]: D

[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: protein is used to repair cells by the human body, Fact2: Protein is necessary for growth and repair., Question: what is required for cell growth? (A) microscope (B) nitrogen (C) protein (D) carbohydrates (E) fat (F) nucleus (G) energy (H) Enzymes
[EX A]:
C