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: Pharmacology
Which of the following drug used in gout act by conveing uric acid into allantoin ? 
Select and explain. 
A. Colchicine, B. Allopurinol, C. Probenacid, D. Rasburicase
D: Rasburicase
Answer: D: Rasburicase 
Explanation: Ans: D. RasburicaseDrugs increasing metabolism of uric acid:Urate oxidase metabolizes insoluble uric acid to soluble allantoin in the birds'.This enzyme is absent in humans.Rasburicase (a recombinant urate oxidase) is used for this Purpose.PEGylateil uricase (pegloticase) is another similar drug.