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: Anatomy
[{'content': 'All are predisposing factors of Osteogenic sarcoma except \nSelect and explain. \nA. Pagets disease of bone, B. Radiation, C. Viral infection, D. Bone infection', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Causes of secondary Osteosarcoma Paget disease. Radiation Fibrous dysplasia Enchondromatosis Multiple osteochindroma Bone infraction Chronic osteomyelitis Refer Maheshwari 9th/e p 239', 'role': 'assistant'}]