A most Common type of VSD –: (A) Membranous, (B) Muscular, (C) Multiple, (D) None
Answer is A. Ventricular septal defect (VSD)

VSD is the most common congenital cardiac lesion.
VSD is a communication between two ventricles.
VSD may be located at : -


Membranous part of ventricular septum (most common → 90%)
Muscular septum
Maybe multiple