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': 'Soap Buble appearance on X ray is seen in which of the following bone tumor \nSelect and explain. \nA. Osteogenic sarcoma, B. Giant cell tumor, C. Multiple myeloma, D. Chondroblastoma', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Soap bubble appaerance is Characeteristic of giant cell tumor (osteoclastoma)', 'role': 'assistant'}]