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': 'Not a radiological finding of scurvy \nSelect and explain. \nA. Palkan spur, B. Pencil - thin cortex, C. Wimburger sign, D. Fraying of metaphysis', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Fraying is seen in Rickets.', 'role': 'assistant'}]