问题:
[单选] 运行下列程序,窗体中的显示结果是:( )。
OptionCompare Database
Dim X AsInteger
PrivateSub Form_Load()
x=3
EndSubPrivate Sub Commandll_click()
Static aAs Integer
Dim b AsInteger
b=x^2
funl x,b
funl x.b
MsgBox”x=‘’&x
End Sub
Subfunl(ByRef Y As Integer,ByVal z AS Integer)
y=y+z
z=y-z
End Sub
A . x=3
B . x=2
C . x=21
D . x=12