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': 'Oliguria causing drug is? \nSelect and explain. \nA. Acyclovir, B. Diazepam, C. Aspirin, D. Montelukast', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Acyclovir Drugs Causing Oliguria Drugs causing decreased renal perfusion - diuretics. Drugs causing nephrotoxicity - aminoglycosides and chemotherapeutic agents. Urine retention - adrenergic and anticholinergic drugs. Urinary obstruction associated with precipitation of urinary crystals - sulfonamides and acyclovir.", 'role': 'assistant'}]