This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Tumors, Subject name: Orthopaedics
This is Xray showing 
Select and explain. 
A. Osteosarcoma, B. Osteochondroma, C. Osteoclastoma, D. Ewing sarcoma
C: Osteoclastoma
Answer: C: Osteoclastoma 
Explanation: X-ray of the radius, AP and Lateral views, showing osteoclastoma (giant cell tumour) of the lower end of the radius (A lytic tumour, with no new bone formation) 'Soap-bubble' appearance - the tumour is homogeneously lytic with trabeculae of the remnants of bone traversing it, giving rise to a loculated appearance. No calcification within the tumour Reference: Maheshwari; Essential Ohopaedics; 7TH ED Page no: 25