单击命令按钮时,下列程度段的执行结果为( )。 Pfivate Sub Command1_Click() Dima As Integer,b As Integer, c As Integera=2:b=4:c=6Call S1(a,b)Print "a=";a;"b=";b;"c=";cCall S2(a,b)Print "a=";a;"b=";b;"c=";c; End Sub Private Sub S1(x As Integer, y As Integer) Dim c As Integerx=2*x:y=y+2:c=x+y End Sub Sub S2(x As Integer, By Val y As Integer) Dim e As Integerx=2*x:y=y+2:e=x+y End Sub
A.a=4 b=6 c=6 a=4 b=6 c=6
B.a=8 b=6 c=6 a=8 b=6 c=6
C.a=4 b=6 c=6 a=8 b=6 c=6
D.a=8 b=6 c=6 a=4 b=6 c=6