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': 'Chest compression to ventilation ratio in resuscitation of children with 2 rescuers is \nSelect and explain. \nA. 30:02:00, B. 3:01, C. 15:02, D. 30:02:00', 'role': 'user'}, {'content': 'Answer: C \nExplanation: In CPR of children compression to ventilation ratio if single rescuer is 30:2 and if double rescuer is 15:2.', 'role': 'assistant'}]