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: Unknown
[{'content': 'Circuit for spontaneous respiration in adults: \nSelect and explain. \nA. Mapleson A, B. Mapleson C, C. Mapleson D, D. Mapleson E', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ref. Oxford textbook of anesthesia. Page. 330\n\xa0\nSpontaneous respiration: A>D,E>C >B\nIPPV :D&E> B> C> A\nMapleson A :\n\nFor adult\nMagill system\nFlow rate = Minute volume\n\nMapleson B: - not used\nMapleson C :\n\nWater system\nChoice in Post operative room\n\nMapleson D:\n\nBain – Coaxial system\nMost effective in assisted control ventilation\n\nMapleson E:\n\nAyre’s T tube\nInfants and young children', 'role': 'assistant'}]