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': 'Which of the following tubes is used in surgery for cleft palate \nSelect and explain. \nA. Flexometallic tube, B. RAE tube, C. Robert shaw double lumen tube, D. None', 'role': 'user'}, {'content': 'Answer: B \nExplanation: RAE tube is used for surgery of cleft palate.', 'role': 'assistant'}]