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: cooking food requires adding heat energy, Fact2: Heat is essentially the source of energy., Question: Doing what to food requires adding the source of energy? (A) burning (B) burying (C) degrading (D) hydration (E) boiling (F) Light (G) sharing (H) cooking
[EX A]: H

[EX Q]: Fact1: gravity causes objects that have mass to be pulled down on a planet, Fact2: Rocks have mass., Question: What does gravity cause to be pulled down on a planet? (A) matter (B) heat (C) earth (D) solutes (E) oceans (F) Rocks (G) people (H) Lift
[EX A]: F

[EX Q]: Fact1: insect bites cause harm to living things, Fact2: Insect repellents are used against flea bites., Question: How can you prevent harm caused by flea bites? (A) Bathing your dogs (B) Using repellent (C) Eating healthier (D) Endocrine system (E) prolactin release (F) an external framework (G) focusing a lens (H) Drinking water
[EX A]:
B