Which heart chamber is more muscular and why?

A. The left ventricle requires more muscle because it must pump more blood than the right ventricle

B. The right ventricle requires more muscle because it must pump more blood than the left ventricle

C. The left ventricle requires more muscle because it must keep blood in the aorta at a high pressure

D. The right ventricle requires more muscle because it must keep blood entering the lungs at higher pressure than blood entering the aorta