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
Which condition is most commonly associated with coarctation of aoa? 
Select and explain. 
A. PDA, B. Bicuspid aoic valve, C. Aoic stenosis, D. VSD
B: Bicuspid aoic valve
Answer: B: Bicuspid aoic valve 
Explanation: Answer is B (Bicuspid Aoic Valve) The most common associated cardiac anomaly with coarctation of aoa is bicuspid aoic valve (Harrison's 17th /1462) Coarctation of aoa is associated with a bicuspid aoic valve in more than 70% of cases - (Nelson 18th / 1900) Associated anomalies with coarctation of Aoa Q Shone complex * Bicuspid Aoic valve(' (commonest) Coarctation of Aoa * PDAQ * VSDQ Left sided obstructive lesions * Tubular hypoplasia of aoic arch(' (Mitral valve abnormalities * Aoic stenosisQ (valvular / subvalvular) and subaoic stenosis) Other Associated lesions that have been asked previously Mitral valve abnormalities (Subvalvular mitral ring /parachute mitral valve) Turner's syndrome('