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': 'What is the modification of the Mapelson E breathing system used in infants? \nSelect and explain. \nA. Mapleson A, B. Mapleson B, C. Mapleson C, D. Mapleson F', 'role': 'user'}, {'content': "Answer: D \nExplanation: Jackson's Rees is best suited for pediatric ventilation.Modification of Ayer's T-piece /type E used in children <6years or 20kgs.", 'role': 'assistant'}]