Ans. is 'c' i.e., Bicuspid aoic valve o 98% of coarctation of aoa is Juxta-ductal (at the origin of ductus aeriosus just below the origin of subclan aery). o Bicuspid aoic valve is associated in more than 70% of patients. o It is also associated with : ----> PDA, VSD, ASD, TGA, Hypoplastic left hea o It is the most common CHD seen in Turner syndrome.