A Diabetic Patient Who Uses Insulin to Control Blood Glucose

A diabetic patient who uses insulin to control blood glucose has been NPO since midnight before having a mastectomy. The nurse will anticipate the need to

A) withhold the usual scheduled insulin dose because the patient is NPO.
B) obtain a blood glucose measurement before any insulin administration.
C) give the patient the usual insulin dose because stress will increase the blood glucose.
D) administer a lower dose of insulin because there will be no oral intake before surgery.