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': 'Antihypertensive of choice in a patient of diabetes mellitus with proteinuria is: \nSelect and explain. \nA. Enalapril, B. Propranolol, C. Hydralazine, D. Minoxidil', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]