This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cardiovascular system, Subject name: Pharmacology
[{'content': 'Drugs used in CHF are: \nSelect and explain. \nA. Nesiritide, B. Digoxin, C. Spironolactone, D. All of the above', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Digoxin is a cardiac glycoside. Spironolactone is aldosterone antagonist and reduce ECF volume and thus decrease preload. Nesiritide enhances BNP (REF.Essentials of medical pharmacology KD TRIPATHI 8th Edition)', 'role': 'assistant'}]