Phytonutrients, found in fresh fruits and vegetables, have beneficial effects on the human cardiovascular system. Because heart disease is a major health concern, American doctors should encourage all people, especially those with heart disease, to eat a diet high in fresh fruits and vegetables.

Which of the following, if true, provides the most support for the argument above?

A:the combination of soluble and insoluble fibers found in whole grains also support heart health

B:a large percentage of those who suffer heart disease in the United States do not live close to large agricultural area where fruits and vegetables are grown

C:smoking cigarettes is a much more serious health risk than the lack of fresh fruits and vegetables in one's diet

D:vegetarians tend to live longer than folks in the general population

E:folks with heart disease who eat few or no fresh fruits and vegetables have heart attacks at a much higher rate than do the folks who eat those foods.