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': 'The cells, which are responsible for removal of bone matrix in bone resorption, are \nSelect and explain. \nA. Osteoblast, B. Fibrocytes, C. Polymorphs, D. Osteoclasts', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]