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': "Radiographic appearance of Pindborg's tumor is – \nSelect and explain. \nA. Onion - peel appearance, B. Sun burst appearance, C. Cherry - blosom appearance, D. Driven - snow appearance", 'role': 'user'}, {'content': 'Answer: D \nExplanation: Pindborg tumor\xa0radiologically presents as\xa0driven snow appearance, i.e.\xa0scattered flecks of calcification throughout the radiolucency.', 'role': 'assistant'}]