题目内容
（请给出正确答案）
[主观题]
设已经在菜单编辑器中设计了窗体的快捷菜单，其顶级菜单为Bt，取消其“可见”属性，运行时，在以下事件
过程中，可以使快捷菜单相应鼠标右键菜单的是
A．Private Sub Form_MouseDown(Button As Integer, Shift As Integer,_ X As Single, Y As Single) If Button=2 Then PopupMenu Bt, 2 End Sub
B．Private Sub Form_MouseDown(Button As Integer, Shift As Integer, _ X As Single, Y As Single) PopupMenu Bt End Suh
C．Private Sub Form. MouseDown(Button As Integer, Shift As Integer, _ X As Single, Y As Single) PopupMenu Bt,0 End Sub
D．Private Sub Form_MouseDown(Button As Integer, Shift As Integer, _ X As Single, Y As Single) If (Button=vbLeftButton) Or (Button=vbRightButton) Then PopupMenu Bt End Sub
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