A 54-year-old man collapses in a shopping centre. Bystanders confirm he is unresponsive and not breathing normally. According to ANZCOR basic life support guidelines, what is the correct chest compression rate and depth for adult CPR?ACompression rate 60-80/min at a depth of 2-3 cmBCompression rate 100-120/min at a depth of one-third of chest (approximately 5-6 cm)CCompression rate 140-160/min at a depth >7 cmDCompression rate 80-90/min at a depth of 1-2 cmECompression rate 50/min at a depth of 4 cmCheck my answer