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': 'Which of the following is not a radiological change in mucopolysaccharidosis? \nSelect and explain. \nA. J shaped sella turcica, B. Spatulate ribs, C. Anterior beaking of the veebra, D. Genu varum', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ans. Genu varum', 'role': 'assistant'}]