A nurse is teaching a client how to use patient-controlled analgesia with morphine. Which of the following statements by the client indicates an understanding of the teaching?

"The pump will not deliver any medication during the lockout period."

"I should wait to push the pain button until the pain becomes severe."

"My partner can push the pain button for me if I fall asleep."

"I will be asked to describe and rate my pain every 8 hours."