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: Pathology
Gene affected in Ewings sarcoma is ? 
Select and explain. 
A. EWS-FLI 1, B. PAX 3, C. EWS ATF 1, D. FUS-CHOP
A: EWS-FLI 1
Answer: A: EWS-FLI 1 
Explanation: Ans, is 'a' i.e., EWS FLI 1