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': 'Acute reversible pulpitis is treated by: \nSelect and explain. \nA. Sedative filling wait and watch, B. Pulpectomy, C. Pulpotomy, D. Pulp capping', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]