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': 'A 50-year-old man presented with multiple pathological fractures. His serum calcium was 11.5 mg/dl and phosphate was 2.5 mg/dl. Alkaline phosphatase was 940 I.U./dl. The most probable diagnosis is - \nSelect and explain. \nA. Osteoporosis, B. Osteomalacia, C. Multiple myeloma, D. Hyperparathyroidism', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Multiple pathological fractures, high calcium, low phosphate and high alkaline phosphatase suggest the diagnosis of hyperparathyroidism.', 'role': 'assistant'}]