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: Medicine
Initial treatment of tumor lysis syndrome is - 
Select and explain. 
A. Rasburicase + Hydration + K binder + Urinary alkalization, B. Allopurinol + Hydration + K binder + alkalization, C. Both rasburicase + Allopurinol + Hydration and K binder, D. Hydration alone is sufficient
A: Rasburicase + Hydration + K binder + Urinary alkalization
Answer: A: Rasburicase + Hydration + K binder + Urinary alkalization 
Explanation: Answer- A. Rasburicase + Hydration + K binder + Urinary alkalizationAllopurinol is used in prophylaxis in low and intermediate risk. Examinar is asking about treatment, in which rasburicase is used.