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: Surgery
All of the following produce Osteoblastic secondaries except - 
Select and explain. 
A. Ca Prostate, B. Carcinoid tumors, C. Ca Breast, D. Multiple myeloma
D: Multiple myeloma
Answer: D: Multiple myeloma 
Explanation: Ans. is 'd' i.e., Multiple myeloma Multiple myeloma causes purely osteolytic lesions with little or no osteoblastic component (punched out lesion)