The Nurse Is Teaching the Patient About Postoperative Exercises Including

The nurse is teaching the patient about postoperative exercises including incentive spirometry.How can the nurse best determine that the teaching was effective?

A) The patient states that the preoperative anxiety has decreased significantly.
B) The patient correctly demonstrates the exercises and how to use the spirometer.
C) The patient senses a caring presence of the nurse in the therapeutic relationship.
D) The patient explains to the nurse why the exercises and spirometer are important.