You arrive on the scene of a motorcycle crash. the patient has point tenderness from the fifth to the seventh cervical vertebrae but is able to move all extremities. the patient has a pulse of 92 beats/min and normal respirations of 16 breaths/min. the patient is wearing an open-face helmet. cervical immobilization would include: a) removing the helmet before immobilization. b) leaving the helmet in place and securing the patient to a backboard. c) cutting the helmet off at the scene. d) applying a cervical collar before removal of the helmet.