Which response would the nurse give to a client who asks, "What is the difference between angina and myocardial infarction (MI)?"
a. "MI occurs after 5 minutes of anginal pain."
b. "Ml occurs when angina is relieved by nitroglycerin."
c. "Unstable angina is considered to be an acute coronary syndrome, and MI is a chronic coronary syndrome."
d. "Angina occurs when myocardial oxygen demand exceeds supply, and MI is the death of cardiac muscle tissue from a prolonged lack of blood supply.