Two Nurses Are in the Day Room When a Visitor

Two nurses are in the day room when a visitor approaches and starts yelling about the care his mother is receiving. One nurse says, "I'm sorry you are upset. What can I do for you?" The visitor continues to complain more loudly. What should the other nurse do?

A) Quietly direct other people out of the room.
B) Leave the room and call security.
C) Say, "Who are you?"
D) Move toward the visitor and say, "Keep your voice down."
E) Stay next to the other nurse.