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: Orthopaedics
[{'content': "Paget's disease also known as - \nSelect and explain. \nA. Osteitis deformans, B. Osteitis fibrosa cystica, C. 0steochondritis, D. Osteomalacia", 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]