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: Medicine
Co-arctation of aorta may be associated with all of the following except - 
Select and explain. 
A. Bicuspid aortic value, B. Turner syndrome, C. Renal artery stenosis, D. PDA
C: Renal artery stenosis
Answer: C: Renal artery stenosis 
Explanation: None