The Horrified CNA Runs to the Nursing Station and Says

The horrified CNA runs to the nursing station and says, "Do you know what Mr. and Mrs. Smith are doing? They're having sex right there in room 210!" What would be the best response of the nurse?

A) Knock discreetly on the door and enter the room.
B) Call the charge nurse to report inappropriate sexual activity.
C) Request an order from the physician to allow intercourse.
D) Give the CNA a "Do Not Disturb" sign to put on the door of room 210.