This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cardiovascular system, Subject name: Pharmacology
[{'content': 'ACE inhibitors are contraindicated in \nSelect and explain. \nA. Diabetes mellitus, B. Hypeension in age old patient, C. Scleroderma, D. Bilateral renal aery stenosis', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Refer kDT 6/e p 484 Angiotensin-conveing enzyme inhibitors (ACEIs) are contraindicated in patients with bilateral renal aery stenosis due to risk of azotemia resulting from preferential efferent aeriolar vasodilation in the renal glomerulus due to inhibition of angiotensin II.', 'role': 'assistant'}]