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': 'In chronic hyperplastic pulpitis, the response to vitality tests will be \nSelect and explain. \nA. Normal response, B. Hyper response, C. Reduced response, D. Normal to hyper response', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]