You Are the Third Ambulance to Arrive at the Scene

You are the third ambulance to arrive at the scene of a nighttime motor vehicle collision on a busy road. As you approach the scene, which one of the following observations should cause you to alert the incident commander of a problem?

A) One ambulance acting as a physical barrier between the wrecked car and oncoming traffic.
B) Traffic cones and an EMT are being used to divert and monitor traffic.
C) One ambulance has been positioned with its lights facing oncoming traffic.
D) The closest ambulance is parked 200 feet from the wrecked car.