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
Drugs which increases nitric oxide are all except? 
Select and explain. 
A. Glycerine trinitrate, B. Hydralazine, C. Sodium nitroprusside, D. Fenoldopam
D: Fenoldopam
Answer: D: Fenoldopam 
Explanation: Ans. is 'd' i.e., Fenoldopam o NO donors, which release NO are used to elicit smooth muscle relaxation. Drugs are - 1. Organic nitrates (nitroglycerine) 3. Sodium nitroprusside 5. Nebivolol 2. Organic nitrites (Isoamylnitrite) 4. Hydralazine