A 58-year-old man collapses in a shopping mall. Bystanders confirm unresponsiveness and absence of normal breathing. According to the latest Heart & Stroke CPR guidelines for lay rescuers in adults, what is the most appropriate immediate action?ACheck for a carotid pulse for up to 30 seconds before starting compressionsBBegin chest compressions at a rate of 100-120/min with minimal interruptions and call for an AEDCDeliver two rescue breaths first and then start compressionsDPlace the patient in the recovery position and wait for paramedicsEDelay CPR until an AED arrivesCheck my answer