At a Community Health Fair, a Nurse Stresses the Importance

At a community health fair, a nurse stresses the importance of a cardiac-prudent diet and exercise routine in order to help prevent coronary artery disease.The rationale for this teaching is based on the fact that:

A) Coronary arteries supply the myocardium with nutrients.
B) Diet and exercise always reduce coronary artery disease.
C) Diet and exercise are more effective treatment modalities in the prevention of coronary artery disease than are medications.
D) Coronary arteries spasm in response to exercise, which enhances myocardial perfusion.