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: Orthopaedics
[{'content': "what is the most likely diagnosis of a 55yrold female complaining of back ache \nSelect and explain. \nA. Osteoporosis, B. Hurler's Syndrome, C. Paget's disease, D. Renal osteodystrophy", 'role': 'user'}, {'content': 'Answer: A \nExplanation: ref : maheswari 7th ed', 'role': 'assistant'}]