Before a Nurse Provides Any Client Care,what Is the BEST

Before a nurse provides any client care,what is the BEST way for a nurse to identify a client?

A) asking the client to state name
B) checking the name on the door of a private room or at the bedside if in a semiprivate room
C) checking the name on the client identification band
D) checking the name on the client identification band and asking client to state name