Which of the following best compares the factors affecting blood flow that directly cause heart attack and stroke? A. Both are caused by muscle damage in the heart that reduces blood flow to the brain.

B. Both are caused by accumulation of plaque in blood vessels that restricts blood flow to the heart.

C. Both are caused by a dislodged blood clot that clogs small vessels in the brain

D. Both are caused by blockage of blood flow in blood vessels that deprives cells of oxygen.