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
Not true about Chondroblastoma 
Select and explain. 
A. Chicken wire appearance, B. CODMAN's tumor, C. Epiphyseal tumor, D. Treated by chemotherapy
D: Treated by chemotherapy
Answer: D: Treated by chemotherapy 
Explanation: Treatment is surgical, extended currettage with bone grafting.