you are dispatched to the scene of a crash involving a large tanker truck. while you are en route, dispatch advises you that there are multiple patients and that the fire department is en route as well. as you approach the scene, you should: a. immediately begin evacuating residents who live near the crash site. b. don personal protective equipment and quickly triage all patients. c. maintain a safe distance and try to read the placard with binoculars. d. cordon off the area and quickly remove all of the injured patients.