[单项选择题]单击命令按钮时,下列程序段的执行结果为()。
PrivateSubCommand1_Click()
DimaAsInteger,bAsInteger,cAsInteger
a-2:b=4:c=6
CallS1(a,b)
Print"a=";a;"b=";b;"c=";c
CallS2(a,b)
Print"a=";a;"b=";b;"c=";c;
EndSub
PrivateSubS1(xAsInteger,yAsInteger)
DimcAsInteger
x=2*x:y=y+2:c=x+y
EndSub
SubS2(xAsInteger,ByValyAsInteger)
DimeAsInteger
x=2*x:y=y+2:e=x+y
EndSub
A.a=4b=6c=6
a=4b=6c=6
B.a=8b=6c=6
a=8b=6c=6
C.a=4b=6c=6
a=8b=6c=6
D.a=8b=6c=6
a=4b=6c=6