This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Skeletal infections, Subject name: Anatomy
[{'content': 'Which of the following is bone forming malignant tumor \nSelect and explain. \nA. Osteoid osteoma, B. Osteosarcoma, C. Chondroblastoma, D. Giant cell tumor', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Bone forming malignant tumor is Osteosarcoma Refer Adams Outline of ohopedics 14th, /e p 113', 'role': 'assistant'}]