This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Orthopaedics
Not a polyostotic bone lesions 
Select and explain. 
A. Osteochondroma, B. Fibrous dysplasia, C. Multiple myeloma, D. Anuerysmal bone cyst
D: Anuerysmal bone cyst
Answer: D: Anuerysmal bone cyst 
Explanation: None