A client has had an acute myocardial infarction. The brother of the client has a history of angina. The client asks how they will know if the brother's pain is angina or if the brother is actually having an MI. Which statement is correct?

a) Chest pain with angina only occurs during the day; MI pain is more likely at night.
b) Rest and intake of nitroglycerin relieve chest pain with angina; they do not relieve chest pain with an MI.
c) Pain is more severe and lasts longer with angina than with an MI.
d) Chest pain with angina only occurs at rest; MI pain occurs during a stressful time.