What Does the Provider Understand About the Issue of "Diabetic

What does the provider understand about the issue of "Diabetic Renal Protection" with angiotensin-converting enzyme (ACE) medications? Diabetes mellitus patients:

A) Have a reduced rate of renal progression, but still need to be discontinued when advanced renal issues present
B) Who start these medications never progress to renal nephropathy
C) With early renal dysfunction will see it reverse when on ACE medications
D) Without renal issues are the only ones who benefit from ACE protection