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': 'Pelkan spur is seen in – \nSelect and explain. \nA. Rickets, B. Scurvy, C. Hemophilia, D. All', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Pelkan spur is seen in scurvy.', 'role': 'assistant'}]