You Are Called to a House for a Domestic Disturbance

You are called to a house for a domestic disturbance where neighbors reported hearing loud screaming and banging noises. When you arrive, you should

A) clearly announce your presence and purpose as you enter the scene.
B) wait until two or three EMS personnel arrive and go in the house together.
C) set up an emergency word with dispatch before entering the scene.
D) wait for an all-clear from law enforcement before entering the home.