This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Pediatrics
[{'content': 'Precancerous lesion of bone among the following is \nSelect and explain. \nA. Paget disease, B. Chronic osteomyelitis, C. Benign giant cell tumor, D. All of the above', 'role': 'user'}, {'content': "Answer: D \nExplanation: Precancerous lesions of bone:Multiple exostosesOllier's diseaseBenign giant cell tumorOsteoblastomaChondroblastomaChronic osteomyelitisPaget's disease(Refer: Nelson's Textbook of Pediatrics, SAE, 1st edition, pg no. 2474)", 'role': 'assistant'}]