I'll medal and fan if you thoroughly explain why.

Which one of the following is a major difference between the circulatory systems of earthworms and fish?

A.
Fish have a single central heart; earthworms have several hearts.

B.
Earthworms have a single central heart; fish have several hearts.

C.
Fish have five pairs of auxiliary hearts; earthworms have one pair of auxiliary hearts.

D.
Earthworms have five pairs of auxiliary hearts; fish have one pair of auxiliary hearts.

Question

I'll medal and fan if you thoroughly explain why.


Which one of the following is a major difference between the circulatory systems of earthworms and fish?
  
 
  


  

  A. 
  Fish have a single central heart; earthworms have several hearts.   
    


  

  B. 
  Earthworms have a single central heart; fish have several hearts.   
    


  

  C. 
  Fish have five pairs of auxiliary hearts; earthworms have one pair of auxiliary hearts.   
    


  

  D. 
  Earthworms have five pairs of auxiliary hearts; fish have one pair of auxiliary hearts.

xofallenangelox · Answer

I know this is English but no one in the science one would answer my question.