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 of the following is a content of dentinal tubules \nSelect and explain. \nA. Odontoblastic process, B. Afferent nerve terminal, C. Dendrites of Antigen presenting cells, D. All', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Contents of Dentinal tubule\n\nOdontoblastic process\nAfferent Nerve terminal\nDendrites of antigen presenting cell\nDentinal fluid\nintratubular dentin', 'role': 'assistant'}]