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
[{'content': 'Pegloticase used in treatment of gout acts by which of the following mechanism: \nSelect and explain. \nA. It inhibits Xanthine oxidase enzyme, B. It metabolizes uric acid to allantoin, C. It inhibits the migration of inflammatory cells, D. It accumulates in synovial fluid and prevent the action of cytokines', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Rasburicase and Pegloticase metabolize insoluble uric acid to soluble allantoin and used in the treatment of chronic gout.', 'role': 'assistant'}]