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: Anatomy
Which of the following is assosciated with poor prognosis in Ewings sarcoma DELETE 
Select and explain. 
A. B2 microglobulin, B. Fever, C. Thrombocytosis, D. Young age
B: Fever
Answer: B: Fever 
Explanation: Fever,anemia and elevation of laboratory values have been repoed to indicate more extensive disease and a worse diagnosis Refer Campbells ohopedic 13th/e p 953