A Client Arrives in the Emergency Department with Severe Chest

A client arrives in the Emergency Department with severe chest pain.What is the best explanation by the nurse to differentiate angina from a myocardial infarction?

A) "Angina usually goes away with rest,and is rarely fatal,but a myocardial infarction requires immediate treatment,and can be life threatening."
B) "There is no way to tell the difference between the two.You will be treated for a myocardial infarction."
C) "Both are caused by a clot blocking the coronary arteries.Angina occurs if a small vessel is blocked,and a myocardial infarction occurs if a large vessel is blocked."
D) "Angina does not cause severe chest pain,but a myocardial infarction always causes severe chest pain."