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
A 10 yr old girl presents with a tibial mass.histopayhological examination reveals a small round cell tumor.whivh of the following molecular findings is most likely to be present 
Select and explain. 
A. 22q translocation, B. 11q deletion, C. 7ptranslocation, D. n-myc amplification
A: 22q translocation
Answer: A: 22q translocation 
Explanation: Ewings sarcoma and primitive neuro ectpdermal tumor are primary malignant small round cell tumors of bone and soft tissue. Reference Robbins page no 1232