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
Which of the following ACE inhibitor is NOT a prodrug? 
Select and explain. 
A. Fosinopril, B. Enalapril, C. Ramipril, D. Lisinopril
D: Lisinopril
Answer: D: Lisinopril 
Explanation: Captopril and lisinopril are not prodrugs among the ACE inhibitors. All the other drugs are prodrugs. A prodrug is a medication or compound that, after administration, is metabolized (i.e., conveed within the body) into a pharmacologically active drug. Inactiveprodrugs are pharmacologically inactive medications that are metabolized into an active form within the body Ref: KD Tripathi 8th ed.