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': 'Widely accepted theory of dental caries \nSelect and explain. \nA. Proteolytic theory, B. Proteolytic chelation theory, C. Acidogenic theory, D. Autoimmune theory', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]