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
The progression of which of the following diseases is retarded by chronic use of enalapril ? 
Select and explain. 
A. Diabetic nephropathy, B. Diabetic retinopathy, C. Hypertensive nephropathy, D. All of the above
D: All of the above
Answer: D: All of the above 
Explanation: None