What Should You Assume When Approaching This Scene

What should you assume when approaching this scene?

A) Bystanders will be responsible for keeping themselves out of harm's way and avoiding the scene.
B) Emergency responders at the scene have already performed a scene size up so you can focus on the patient.
C) The patient has most likely suffered from multi system trauma and you need to call for additional resources.
D) One crew member should treat the patient immediately while others assess the need for additional resources.