Excess Cholesterol Can Cause Sticky Deposits to Form on the Walls

Excess cholesterol can cause sticky deposits to form on the walls of blood vessels. Why does the presence of these deposits raise the likelihood of a heart attack?

A) The cholesterol turns into steroid hormones, and the excess hormones stress the heart muscle.
B) The cholesterol makes the blood thicker, causing the heart to have to work harder to push it through the vessels.
C) The deposits decrease the vessel diameter, thus increasing friction drag and stressing the heart as it pumps the blood.
D) The cholesterol cuts off the blood supply to the capillaries, stressing the heart as it tries to force blood into them.