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: Pathology
[{'content': 'Psammoma bodies shows which type of calcification: \nSelect and explain. \nA. Metastatic, B. Dystrophic, C. Secondary, D. Any of the above', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Dystrophic', 'role': 'assistant'}]