Which of the following nitrates and nitrite drugs is used for prevention of angina attack?

pharmacy

Which of the following nitrates and nitrite drugs is used for prevention of angina attack?

a) Nitroglycerin, 2% ointment (Nitrol)

b) Nitroglycerin, oral sustained-release (Nitrong)

c) Isosorbide mononitrate (Ismo)

d) All of the above