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': 'Metastatic calcification is seen in: September 2009 \nSelect and explain. \nA. Cysts, B. Atheroma, C. Normal tissues, D. Infarcts', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans. C: Normal tissues', 'role': 'assistant'}]