This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Anaesthetic equipments, Subject name: Anaesthesia
[{'content': "Bains' circuit is Mapelson type - circuit - \nSelect and explain. \nA. Type A, B. Type B, C. Type D, D. Type E", 'role': 'user'}, {'content': "Answer: C \nExplanation: Type A - Magills circuit Type C - Water,'s (to and from) circuit Type D - Bain's circuit Type E - Sure's T piece Type F -Jackson-Rees circuit.", 'role': 'assistant'}]