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: Radiology
[{'content': 'Subperiosteal erosion is seen in: \nSelect and explain. \nA. Scurvy, B. Hyperparathyroidism, C. Hypoparathyroidism, D. Rickets', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. Hyperparathyroidism', 'role': 'assistant'}]