A Patient Asks a Nurse How Nitroglycerin Works to Relieve

A patient asks a nurse how nitroglycerin works to relieve anginal pain. The nurse correctly states, "Nitroglycerin:

A) dilates coronary arteries to increase blood flow to the heart."
B) increases the oxygen supply to the cardiac muscle."
C) increases ventricular filling to improve cardiac output."
D) promotes vasodilation, which reduces preload and oxygen demand."