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 most commonly seen in - \nSelect and explain. \nA. Cornea, B. Extensor tendon, C. Lungs, D. Renal tubules', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., Lung", 'role': 'assistant'}]