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': 'All are radiological sign of Vit C deficiency except – \nSelect and explain. \nA. White line of frenkel, B. Wimberger line, C. Osteoporosis of bone, D. Widening of epiphysis', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]