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
Soap Buble appearance on X ray is seen in which of the following bone tumor 
Select and explain. 
A. Osteogenic sarcoma, B. Giant cell tumor, C. Multiple myeloma, D. Chondroblastoma
B: Giant cell tumor
Answer: B: Giant cell tumor 
Explanation: Soap bubble appaerance is Characeteristic of giant cell tumor (osteoclastoma)