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: Dental
[{'content': 'Compared to the inter tubular dentin, peritubular\ndentin is characterized by which of the following? \nSelect and explain. \nA. Greater stainability, B. Lesser content of inorganic salts, C. Greater content of inorganic salts, D. Greater content of large collagen fibers', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]