[单项选择]如果需要在Myform=CreateObject("Form")所创建的表单对象Myform中添加commandl按钮对象,应当使用命令 ______。 A. AddObjectCommandlAScommandbutton B. MyforAddobject(”commandl","commandbutton") C. MyforAddobject(”commandbutton","commandl") D. commandl=Addobject(”comandl","commandbutton")