The left ventricle has a more muscular wall than the other three chambers of the heart because the left ventricle

A) must generate enough blood pressure to pump blood into the aorta and throughout the body.
B) pumps blood more rapidly than the other chambers.
C) pumps blood into the atria.
D) must decrease the amount of pressure on the blood so it can flow more smoothly.
E) receives blood directly from major arteries.