This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Hypeension, Arrhythmias, Dyslipidemia, Subject name: Pharmacology
All of the following ACE inhibitors are prodrugs and are activated by esterases in the liver except: 
Select and explain. 
A. Captopril, B. Ramipril, C. Perindopril, D. Spirapril
A: Captopril
Answer: A: Captopril 
Explanation: Captopril , lisinopril and enalaprilat are active molecules. All other ACE inhibitors like enalapril, Benazepril, fosinopril, moexipril, perindopril, spirapril, ramipril, and trandolapril are prodrugs.