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: \nSelect and explain. \nA. Pediatric surgery, B. Neurosurgery, C. Cardiac surgery, D. Thoraxic surgery', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Neurosurgery', 'role': 'assistant'}]