Which Sequence Represents the Correct Order of Blood Flow in the Fish

Which sequence represents the correct order of blood flow in the fish circulatory system?

A) Heart $\rightarrow$ gills $\rightarrow$ systemic tissues
B) Heart $\rightarrow$ systemic tissues $\rightarrow$ gills
C) Heart $\rightarrow$ systemic tissues $\rightarrow$ gills $\rightarrow$ systemic tissues
D) Systemic tissues $\rightarrow$ heart $\rightarrow$ gills $\rightarrow$ heart
E) Heart $\rightarrow$ systemic tissues