A Patient Has Collapsed and Cannot Be Aroused by Asking

A patient has collapsed and cannot be aroused by asking loudly, "Are you okay?" The next action should be to:

A) position the fingers over the carotid artery to feel for a pulse.
B) tilt the head by placing one hand on the forehead and lift the chin.
C) call for help or, if there is assistance, have that person get help.
D) deliver two quick short breaths into the patient's airway.