A nurse is discussing informed consent with a newly licensed nurse. Which of the following statements by the newly licensed nurse indicates an understanding of the information?

"A client must sign an Against Medical Advice form if he withdraws consent."

"A client can withdraw consent at any time after signing the informed consent form."

"A client who is involuntarily admitted to a mental health unit cannot withdraw consent for treatment.

"A client must provide a written refusal for a procedure for which he has already signed an informed consent."