单项选择题

已知有定义     constintD=5;     inti=1;     doublef=0.32;     charc=15;   则下列选项错误的是( )。

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