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': 'Pulp cavity tests are used to check? \nSelect and explain. \nA. Pulp blood supply, B. Afferent nerve fibers, C. Efferent nerve fibers, D. None', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]