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").

[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
[A]: H

[Q]: Fact1: Ants communicate with chemicals called pheromones., Fact2: Ants use receptors on their antennae to follow recruitment pheromone trails., Question: What do ants use to communicate? (A) nerves (B) heat energy (C) sound (D) binary code (E) light energy (F) Antennae. (G) megaphones (H) hand signals
[A]: F

[Q]: Fact1: Plants use cellulose for their cell walls., Fact2: Basically, fiber is cellulose ., Question: Plants use what for their cell walls? (A) sugar (B) cations (C) sulfur (D) fiber (E) glucose (F) Carbon (G) Cane. (H) peat
[A]:
D