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: Medicine
[{'content': 'A 50-year-old male with 2 diabetes mellitus is found to have 24-hour urinary albumin of 250 mg. Which of the following drugs may be used to retard the progression of the renal disease - \nSelect and explain. \nA. Hydrochlorthiazide, B. Enalapril, C. Amiloride, D. Aspirin', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]