﹣28x⁴y²÷7x³y=(      )

The nurse is providing postoperative care for a client recovering from abdominal surgery. The client is receiving morphine through a client-controlled analgesia pump. Which finding would indicate that the client is obtaining adequate pain relief ？（）

A．Awakening several times during the night to redose.

B．Respiratory rate of 10 breaths/minute.

C．Pain rating of 2 or 3 on a scale of 0 to 10.

D．Complaint of itching as an adverse effect of the analgesia.