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: Refer katzung 11e 183 KDT 6/e p23, 24,487 All ACE inhibitor are prodrug except captopril and Lisinopril