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: Medicine
[{'content': 'Osteoporosis may be seen in all except: \nSelect and explain. \nA. Hyperparathyroidism, B. Hypoparathyroidism, C. Thyrotoxicosis, D. Heparin administration', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Answer is B (Hypoparathyroidism) Osteoporosis is caused by hyperparathyoroidism and not by hypoparathyroidism', 'role': 'assistant'}]