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
Precancerous lesion of bone among the following is 
Select and explain. 
A. Paget disease, B. Chronic osteomyelitis, C. Benign giant cell tumor, D. All of the above
D: All of the above
Answer: D: All of the above 
Explanation: 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)