A nurse is caring for a client who wants to stop receiving treatment for terminal cancer. The client's family asks the nurse if it is possible to continue the treatment without the client's knowledge. Which of the following responses should the nurse make?

"Your family member has the right to refuse care."

"To continue treatment, you must be appointed as your family member's health care surrogate."

"We should discuss different treatment options when your family member is not present."

"I can submit your request to the ethics committee."