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

Multiple Choice

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

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