This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Anaesthesia
First step in CPR (cardio pulmonary resuscitation) should be – 
Select and explain. 
A. IV adrenaline, B. Intracardic atropine, C. Airway maintainance, D. Hystrectomy
C: Airway maintainance
Answer: C: Airway maintainance 
Explanation: The management of CPR should be done in following sequence :- A (aiway) → B (breathing) → C (circulation) → D (defibrillation).