In Planning Preoperative Teaching for a Patient Undergoing a Roux-En-Y

In planning preoperative teaching for a patient undergoing a Roux-en-Y gastric bypass as treatment for morbid obesity, the nurse places the highest priority on

A) demonstrating passive range-of-motion exercises to the legs.
B) teaching the patient about the postoperative presence of a NG tube connected to suction.
C) teaching the patient proper coughing and deep-breathing techniques and methods of turning and positioning.
D) discussing the necessary postoperative modifications in lifestyle.