单项选择题

有如下程序:   Private Sub Commandl_Click()     Dim a As Single     Dim b As Single     a=2:b=4     Call CS(a,b)   End Sub   Sub CS(x As Single,y As Single)     t=X     x=t\y     y=t Mod y   End Sub   程序运行后,单击命令按钮,a和b的值分别为( )。

A.Dim pict[3,4]As Integer
B.Dim pict(3,4)As Integer
C.Dim pict[3.4]As Integer
D.Dim pict(3:4)As Integer.