The circulation of blood around the body is reduced as a result of the partial blockage of the coronary arteries. Which of the following is the most probable explanation for this?
A. Less blood is pumped out from the heart as the exit is blocked
B. The heart muscle contracts less powerfully due to the reduced supply of blood
C. The resistance to blood flow increases as the lumen of the arteries is reduced by the cholesterol plaque
D. The blood pressure decreases after the blood passes through the blocked arteries