This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: C.V.S, Subject name: Medicine
Aoic regurgitation may be associated with all of the following except 
Select and explain. 
A. Ankylosing Spondylitis, B. Marfan's Syndrome, C. Dissection of the aoa, D. Polyaeritis nodosa
D: Polyaeritis nodosa
Answer: D: Polyaeritis nodosa 
Explanation: Aoic regurgitation Valvular Congenital (bicuspid) Endocarditis Rheumatic fever Myxomatous (prolapse) Traumatic Syphilis Ankylosing spondylitis Root disease Aoic dissection Cystic medial degeneration Marfan's syndrome Bicuspid aoic valve Nonsyndromic familial aneurysm Aoitis Hypeension ( Harrison&;s principle of internal medicine,18th edition,pg no. 1930 )