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
ACE inhibitors are contraindicated in all of the following except: 
Select and explain. 
A. Pregnancy, B. Diabetes, C. Bilateral renal artery stenosis, D. Renal failure
B: Diabetes
Answer: B: Diabetes 
Explanation: None