You are approaching an overturned tanker truck to assess the driver, who appears to be unresponsive. As you get closer to the vehicle, you note the smell of noxious fumes and find that you are in the midst of a vapor cloud. What should you do?
A. Cover your face with your shirt and quickly extricate the injured driver.
B. Realize that you are in the danger zone and prevent others from entering.
C. Remain where you are and perform a visual assessment of the patient.
D. Exit the area immediately and gather information for the HazMat team.