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': 'Drug not used in CHF is: \nSelect and explain. \nA. Nestritide, B. NTG, C. Spironolactone, D. Trimetarine', 'role': 'user'}, {'content': 'Answer: B \nExplanation: NTG', 'role': 'assistant'}]