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': 'Dystrophic calcification are calcifications seen in \nSelect and explain. \nA. Skin layers, B. Salivary glands, C. Normal tissues, D. Dead tissue', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]