71.下列何者為最常見的先天性心臟病？
(A)心室中隔缺損(Ventricular Septal Defect, VSD)
(B)心房中隔缺損(Atrial Septal Defect, ASD)
(C)主動脈瓣狹窄(Aortic Stenosis, AS)
(D)肺動脈瓣狹窄(Pulmonic Stenosis, PS)

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統計： A(253), B(19), C(2), D(4), E(0) #890459