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': 'Armoured endotracheal tube is used in surgeries all except \nSelect and explain. \nA. Neurosurgery, B. Cleft lip surgery, C. Spine surgery, D. Neck surgery', 'role': 'user'}, {'content': 'Answer: B \nExplanation: RAE tubes are used in cleft lip and palate surgery.', 'role': 'assistant'}]