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
Epiphyseal tumor is - 
Select and explain. 
A. Osteoclastoma, B. Chondromyxoid fibroma, C. Osteosarcoma, D. Ewing sarcoma
A: Osteoclastoma
Answer: A: Osteoclastoma 
Explanation: GCT is an osteolytic tumor arising from the epiphysis and is common between the age of 20-40 years.