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
Drug not used in CHF is: 
Select and explain. 
A. Nestritide, B. NTG, C. Spironolactone, D. Trimetarine
B: NTG
Answer: B: NTG 
Explanation: NTG