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: Pathology
[{'content': 'Osteosarcoma characteristically may develop in some cases of \nSelect and explain. \nA. Osteopetrosis, B. Osteogenesis irnperfecta, C. Acromegaly, D. Osteitis deformans', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]