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
[{'content': 'Which of the following is not a prodrug: \nSelect and explain. \nA. Lisinopril, B. Methyldopa, C. Enalapril, D. None of the above', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Lisinopril', 'role': 'assistant'}]