You arrive at the scene of a domestic violence situation. As you approach the doorway of the apartment, you hear screaming and the statement, "He has a gun!" At this point, you should _______
a. Stay where you are and ask the person to drop the weapon.
b. Continue into the apartment and apprehend the gunman.
c. Return to the ambulance and call for law enforcement assistance.
d. Continue into the apartment as if nothing had happened.