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': 'Cells found in dental pulp are all except \nSelect and explain. \nA. Odontoblast, B. Fibroblast, C. Macrophages, D. Ameloblast', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]