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: Surgery
[{'content': "A known patient with renal stone disease developed pathological fractures along with abdominal pain and certain psychiatric symptoms. He should be investigated for - \nSelect and explain. \nA. Polycystic kidney, B. Renal tubular acidosis, C. Hyperparathyroidism, D. Paget's disease of bone", 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]