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
Which of the following drugs do not produce active metabolites ? 
Select and explain. 
A. Enalapril, B. Lisinopril, C. Prednisone, D. Sulfasalazine
B: Lisinopril
Answer: B: Lisinopril 
Explanation: None