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': 'In congestive cardiac failure all are used except \nSelect and explain. \nA. Spironlactone, B. Nitrates, C. Nesiritide, D. Trimetazidine', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]