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
Metaphyseal tumor among the following 
Select and explain. 
A. Osteoclastoma in adults, B. Multiple myeloma, C. Osteosarcoma, D. Osteoid osteoma
C: Osteosarcoma
Answer: C: Osteosarcoma 
Explanation: None