The Standard Orders on the Cardiac Unit State,"Notify the Physician

The standard orders on the cardiac unit state,"Notify the physician for MAP less than 70 mm Hg." For which patient would the nurse call the physician?

A) The patient with left ventricular failure who has a BP of 110/70 mm Hg
B) The patient with a myocardial infarction who has a BP of 114/50 mm Hg
C) The postoperative patient with a BP of 116/42 mm Hg
D) The newly admitted patient with a BP of 122/60 mm Hg