What are the four only reasons you stop CPR?
a. When the ambulance arrives, when the victim starts breathing, when you are tired, when medical personnel take over.
b. When the victim starts breathing, when you are tired, when you need to call for help, when you're hungry.
c. When the victim starts breathing, when you are tired, when you need to go home, when you see someone you know.
d. When the ambulance arrives, when the victim starts breathing, when you need to call for help, when you need a break.