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': "Bone Pain, bone, cysts, fractures and renal stones are\ncharacteristics of \nSelect and explain. \nA. Hyperparathyroidism, B. Cushing's syndrome, C. Multiple myelonia, D. Marfan's syndrome", 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]