Under Which Circumstances Should a Nurse Contact the Physician to Postpone

Under which circumstances should a nurse contact the physician to postpone an angiography?

A) If a patient has been nothing by mouth (NPO) for only 1 hour.
B) If a patient's femoral site has been shaved and cleansed with an antiseptic.
C) If the patient received diphenhydramine (Benadryl) as a preprocedure medication.
D) When test results reveal a blood urea nitrogen (BUN) level of 15 mg/100 mL and a creatinine level of 0.8 mg/mL.