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: Dental
[{'content': "According to Gutman's classification periapical surgery includes all except: \nSelect and explain. \nA. Periapical curettage, B. Root end resection., C. Root end preparation., D. Perforation repair.", 'role': 'user'}, {'content': 'Answer: D \nExplanation: GOT MAN’S CLASSIFICATION\n1. Fistulative surgery\n\nI & D\nCortical Trephination\nDecompression Pracedure\n\n2. ieri Apical Surgery\n\nPeriapical curellage\nRoot end Resection\nRoot end Preparation\nRoot end Filling\n\n3. Corrective Surgery\n\nPerformation Repairs\n\nPathological Performance Repair\nIatrogenic Performance Repair\n\nRoot Reseation\n\nRadisection/ He\n\nHemi section – Bicuspidization\nIntertional Replaniation.', 'role': 'assistant'}]