You are in charge of triage at a scene involving 30 patients exposed to carbon monoxide. You find a six-year-old boy who is not breathing. You open his airway and find that breathing does not return. Furthermore, you cannot locate a radial pulse. You should:

A) apply oxygen and check the patient's mental status.
B) place a black tag on the patient and move to the next.
C) provide 15 seconds of positive pressure ventilation.
D) provide 15 seconds of CPR and recheck for a radial pulse.

B