A Nurse Is Preparing a Patient with Type 2 Diabetes

A nurse is preparing a patient with type 2 diabetes to undergo an adrenal gland scan that requires administration of an iodinated contrast medium.Which of the following interventions should the nurse take specifically related to this patient's diabetes?

A) Discontinue the patient's metformin the day of the procedure and for 48 hours afterward.
B) Ask whether the patient is allergic to the contrast medium.
C) Have emergency equipment readily available.
D) Instruct the patient to void prior to the procedure.