The nurse is caring for a client admitted to the emergency department after a motor vehicle accident. Under the law, the nurse must obtain informed consent before treatment unless （）.

A．the client is mentally ill.

B．the client refuses to give informed consent.

C．the client is in an emergency situation.

D．the client asks the nurse to give substituted consent.

以下争议可以申请行政复议的是（）

A、认为行政机关侵犯合法经营自主权的

B、申请行政机关履行保护人身权利，行政机关没有履行的

C、对具体行政行为所依据的部分规定合法性产生争议的

D、不服行政机关对民事纠纷作出的调解