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 is best for reducing proteinuria in a diabetic patient ? 
Select and explain. 
A. Metoprolol, B. Perindopril, C. Chlorothiazide, D. Clonidine
B: Perindopril
Answer: B: Perindopril 
Explanation: None