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 are prodrugs ? \nSelect and explain. \nA. Mercaptopurine, B. Dipivefrine, C. Enalapril, D. All of these', 'role': 'user'}, {'content': 'Answer: D \nExplanation: - Among given options Enalapril, Dipivefrine and Mercaptopurine are prodrugs.', 'role': 'assistant'}]