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': 'Z-platy is performed in cases of \nSelect and explain. \nA. High frenal attachment, B. Shallow sulcus, C. Deep sulcus, D. Low frenal attachment', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]