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
[{'content': 'First step in CPR (cardio pulmonary resuciatation) should be : \nSelect and explain. \nA. IV adrenaline, B. Intracardic atropine, C. Airway maintainance, D. Hystrectomy', 'role': 'user'}, {'content': 'Answer: C \nExplanation: C i.e. Airway maintenance', 'role': 'assistant'}]