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: Echinoderms use pheromones to communicate with each other., Fact2: Echinoderms are represented by the starfish., Question: Starfish use _ to communicate with each other. (A) scattered light (B) pheromones (C) heat produced (D) sound (E) waves (F) Chemical energy (G) electricity (H) kinetic energy
A:
B