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': "Symbolic stripped 'Y' classification for cleft Lip and palate was given by \nSelect and explain. \nA. Veou, B. Kernahan, C. Jackson, D. Edward H. Angle", 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]