Fact 1: Fish have a circulatory system with a two-chambered heart.

Fact 2: Fish species include salmon and trout.

Given the two facts above, answer the question "What has circulatory system with a two-chambered heart?" with the following options: 
- sharks
 - trout
 - pan
 - toads
 - Birds
 - animals
 - mammals
 - Man


 

  trout       