After a Patient with a Pituitary Adenoma Has Had a Hypophysectomy,the

After a patient with a pituitary adenoma has had a hypophysectomy,the nurse will plan to do discharge teaching about the need for which of the following?

A) Insulin use to maintain blood glucose at normal levels
B) Sodium restriction to prevent fluid retention and hypertension
C) Oral corticosteroids to replace endogenous cortisol
D) Chemotherapy to prevent recurrence of the tumour