During Preoperative Teaching for a Patient Scheduled for Transsphenoidal Hypophysectomy

During preoperative teaching for a patient scheduled for transsphenoidal hypophysectomy for treatment of a pituitary adenoma, the nurse instructs the patient about the need to

A) cough and deep breathe every 2 hours postoperatively.
B) remain on bed rest for the first 48 hours after the surgery.
C) be positioned flat with sandbags at the head postoperatively.
D) avoid brushing the teeth for at least 10 days after the surgery.