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: Surgery
[{'content': "Which is claimed to be the most successful treatment for cleft palate? \nSelect and explain. \nA. Mirault Blair operation., B. Miller's rotation advancement., C. Langenbeck's operation., D. None", 'role': 'user'}, {'content': "Answer: C \nExplanation: Langenbeck and Wardill's four flap operations are for the repair of cleft palate", 'role': 'assistant'}]