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: Radiology
Other than osteosarcoma, sun-ray appearance is also seen in: 
Select and explain. 
A. Ewing's sarcoma, B. Fibrous dysplasia, C. Chondrosarcoma, D. All of the above
A: Ewing's sarcoma
Answer: A: Ewing's sarcoma 
Explanation: Osteosarcoma produces sun-ray or sunburst appearance with spicules of new bone radiating outward on the periphery in the sclerosing form of osteosarcoma. Sun-ray appearance is also seen in Ewing's sarcoma.