In Mammalian Hearts, the Wall of the Left Ventricle Is

In mammalian hearts, the wall of the left ventricle is thicker than that of the right ventricle because

A) systemic pressure is greater than pulmonary pressure.
B) the left ventricle pumps a greater volume of blood than the right ventricle.
C) contractions of the left ventricle fill more arteries than contractions of the right ventricle.
D) blood loses pressure as it passes through the lungs.
E) it arose from a larger aortic arch during evolution.