A Client with a History of Cardiac Issues Is Admitted

A client with a history of cardiac issues is admitted to the emergency department with suspected myocardial infarction (MI, or "heart attack") . The client's spouse tells the nurse that the client had pain in the jaw area that was not relieved with nitroglycerin. The client's spouse asks the nurse how jaw pain is related to having a "heart attack." Which explanation by the nurse is the most appropriate?

A) "The doctors would rather treat you as a cardiac client until they find out why the nitroglycerin did not work."
B) "Sometimes cardiac pain is not just in your chest, but in your jaws, arms or back."
C) "They may have been so stressed that they clenched their jaws and did not realized if they had any chest pain or not."
D) "It may not be related, but cardiac pain is so serious to investigate and treat."