—— Have you ever seen anything like that before？

---- ____.

A．No，I never have seen anything like that before

B．No，never I have seen anything like that before

C．No，never have 1 seen anything like that before

D．No，I have seen anything like that before never

假定有如下事件过程：Private Sub Form_MouseDown(Button as Integer,Shift as Integer, X as Single,Y as Single)If Button=2 Then PopupMenu PopForm End Sub 则以下描述中错误的是()。

A.该过程的功能是弹出一个菜单

B.popForm是在菜单编辑器中定义的弹出式菜单的名称

C.参数X、Y指明鼠标的当前位置

D.Button＝2表示按下的是鼠标左键