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': 'Circuit of choice for controlled ventilation ? \nSelect and explain. \nA. Magill circuit, B. Type C, C. Type D, D. Type E', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., Type D", 'role': 'assistant'}]