This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Malignancies, Subject name: Pediatrics
[{'content': 'Pre-cancerous lesion of bone- \nSelect and explain. \nA. Paget disease, B. Chronic osteomyelitis, C. Benign giant cell tumor, D. Ail of above', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is 'd' i.e., All of above Pre-cancerous lesion of boneMultiple exostosesOllier's diseaseBenign giant cell tumorOsteoblastomaChondroblastomaChronic osteomyelitisPaget's disease", 'role': 'assistant'}]