A Client Is in the Preoperative Area and the Nurse

A client is in the preoperative area and the nurse is teaching incentive spirometry use. The student asks why this is necessary before the operation. What response by the nurse is best?

A) "It saves time for the postoperative nurse who will be too busy."
B) "It's always best to do as much teaching as possible preoperatively."
C) "After surgery, the client may be too medicated to understand directions."
D) "We will have the client demonstrate in the post-anesthesia care unit."