A nurse is providing teaching to a client about advance directive. Which of the following statements by the client indicates an understanding of the teaching?

"Once I sign my living will, a family member must co-sign it."

"My durable power of attorney for health care is part of my advance directives."

"I will wait until I have a serious health problem to sign my advance directives."

"My doctor will need to provide approval for the decisions outlined in my living will."