This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Musculoskeletal system, Subject name: Anatomy
CD 99 is for 
Select and explain. 
A. Ewings sarcoma, B. SLL, C. Dermatofibroma protuberans, D. Malignant Histiocytic fibroma
A: Ewings sarcoma
Answer: A: Ewings sarcoma 
Explanation: Refer Harrison 17th/613