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': "Which dental tissue doesn't contain nerves? \nSelect and explain. \nA. Bone, B. Dentin, C. Cementum, D. Pulp", 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]