When sizing up a motor-vehicle crash in which a small passenger car struck a bridge pillar and sustained severe damage, you should:

A: immediately approach the vehicle and determine if it is stable.
B: ensure that there are no hazards and then try to open one of the doors.
C: disconnect the battery cables and then request heavy extrication tools.
D: break the driver's side window and gain rapid access to the patient.

Answer: B: ensure that there are no hazards and then try to open one of the doors.