Fact 1: Echinoderms use pheromones to communicate with each other.

Fact 2: All echinoderms are deuterostomes .

Given the two facts above, answer the question "at least some deuterostomes use pheromones to do what?" with the following options: 
- attack prey
 - seed dispersal
 - share properties
 - deuterostome with each other
 - not communicate
 - Release energy
 - mate with females
 - communicate with each other


 

        communicate with each other 