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': 'The simplest form of pulp therapy is \nSelect and explain. \nA. Apicocectomy, B. Pulp capping, C. Pulpectomy, D. Pulpotomy', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]