This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous, Subject name: Orthopaedics
Most common tumor of vertebral spine in adults 
Select and explain. 
A. Secondary deposits, B. Multiple myeloma, C. Lymphoma, D. Hemangioma
A: Secondary deposits
Answer: A: Secondary deposits 
Explanation: (A) Secondary deposits> Most common secondary deposits from visceral primary malignancy occurs in the site of vertebral spine.> Most common primary bone marrow malignancy is multiple myeloma> Most common primary malignant bone tumor is osteosarcoma.