According to the Text, Why Is the Wall of the Left

According to the text, why is the wall of the left ventricle thicker than the wall of the right ventricle

A) The left ventricle must pump much more blood than the right ventricle, so it must have stronger walls.
B) The right ventricle must pump much more blood than the left ventricle, so it has a larger chamber to accommodate the blood and a correspondingly thinner wall.
C) The left ventricle must pump the same amount of blood into the high-resistance, high-pressure systemic system as does the right ventricle into the low-resistance, low-pressure pulmonary system.
D) The right ventricle must create higher tension within its walls.