This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Musculoskeletal system, Subject name: Anatomy
[{'content': 'Characterisic microscopic features of Osteogenic sarcoma is \nSelect and explain. \nA. Osteoid formation, B. Osteoid formation by Mesenchymal cells with pleomorphism, C. Codmans triangle, D. Predominant osteoclast', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Osteoid formation by Mesenchymal cells with large Pleomorphism Ref :Robbins 8th/1226', 'role': 'assistant'}]