Fact 1: Mollusks have a circulatory system with one or two hearts that pump blood.

Fact 2: Interestingly, a squid is also a mollusk.

Given the two facts above, answer the question "An animal which may have one or two hearts to pump blood is:" with the following options: 
- squid
 - goats
 - bats
 - mammals
 - toads
 - Birds
 - edible
 - a fish


 

 squid        