The Medical Assistant Receives a Telephone Call Before Any Other $\circ$

The medical assistant receives a telephone call before any other office staff have arrived at the office stating that the caller's child has burned her left hand and arm with boiling water. What should the medical assistant tell the patient?

A) Call back in 20 minutes, because the physician should have arrived by then.
B) Call an ambulance (911) and have the child taken to the emergency department.
C) Wait by the telephone while the medical assistant contacts the physician and asks for advice.
D) Take the child's temperature and call back if it is above 103 ^$\circ$ F.