This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Kidney, Subject name: Pharmacology
[{'content': 'Safe diuretic in renal dysfunction is \nSelect and explain. \nA. Mannitol, B. Bumetinide, C. Chlohalidone, D. Acetazolamide', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Loop diuretics are safe in renal dysfunction, liver cirrhosis and CCFRef: KDT 7THed Pg 581', 'role': 'assistant'}]