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': 'Main cell of shedding are: \nSelect and explain. \nA. Osteoclasts., B. Odontoclasts., C. Fibroblasts., D. All of the above.', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Odontoclasts are the main shedding cells.', 'role': 'assistant'}]