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: Radiology
Most common cause of punched out lesions in phalanges is: 
Select and explain. 
A. Enchondroma, B. Chondrosarcoma, C. Aneurysmal bone cyst, D. Multiple myeloma
A: Enchondroma
Answer: A: Enchondroma 
Explanation: Ans. Enchondroma