A 7-year-old child was riding a bike downhill and struck a parked car. He was thrown from the bike, impacting his head and back on the roadway. Presently, he is alert, oriented, and complaining of a headache. His airway is open and his breathing is adequate. A radial pulse is easily palpated and his skin is warm and dry. After taking manual in-line spinal immobilization, the EMT would:

A) immobilize the patient to the long spine board.
B) consider the need for supplemental oxygen.
C) perform a rapid trauma exam and obtain vital signs.
D) apply a cervical collar and check the mental status.

B