运行下列程序:Private Sub Form_Click( )For i = 3 To 1 Step －1For j = 2 To 1 Step －1Debug

运行下列程序：

Private Sub Form_Click( )

For i = 3 To 1 Step -1

For j = 2 To 1 Step -1

Debug.Print "A"; String(3 - i, "*");

Next j

Next i

End Sub

单击窗体后，则在立即窗口内显示结果是( )。

A.AAA*A**A***

B.AAA*A*A**A**

C.A*A*A*A*A*A*

D.A***