A patient reports recurrent chest pain that occurs regardless of activity and is not relieved by rest. The provider administers a nitroglycerin tablet which does not relieve the discomfort. What is the next action? a. Start aspirin therapy and refer the patient to a cardiologist. b. Give the patient a beta blocker medication. c. Prescribe a calcium channel blocker mediation. d. Administer a second nitroglycerin tablet.