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
Acute Aoic regurgitation is seen in all of the following except - 
Select and explain. 
A. Marfan's syndrome, B. Acute myocardial infarction, C. Bacterial endocarditis, D. Ankylosing spondylitis
B: Acute myocardial infarction
Answer: B: Acute myocardial infarction 
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 )