This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Osteology, Subject name: Anatomy
[{'content': 'Osteoclasts are \nSelect and explain. \nA. Derived from hematopoietic cells, B. Multi nucleated cells, C. Develop in inactive stage, D. All are true', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Osteoclasts are responsible for bone resorption. They are multi-nucleated cells These cells are derived from the mononuclear hematopoietic progenitor cells', 'role': 'assistant'}]