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
Psammoma bodies show which type of calcification: 
Select and explain. 
A. Metastatic, B. Dystrophic., C. Secondary, D. Any of the above
B: Dystrophic.
Answer: B: Dystrophic. 
Explanation: Dystrophic