下列( )事件过程可以将打开文件对话框的标题改变为“new Caption”。

A．Prirate Sub Commandl Click()
CommonDialogl.DialogTitle="new Caption"
CommonDialogl.ShowFont
End Sub
B．Private Sub Commandl+Click()
CommonDialogl.DialogTitle="new Caption"
CommonDialogl.ShowOpen
End Sub
C．Private Sub Commandl_Click()
CommonDialogl.DialogTitle="new Caption"
CommonDialogl.ShowHelp
End Sub
D．Private Sub Commandl_Click()
CommonDialogl.DialogTitle="new Caption"
CommonDialogl.ShowColor
End Sub