Q: 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").
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
A:
B