You develop a Web application. Your application contains two settings in the Web.config file. You deploy your application to production. You need to modify the application settings in the production environment without manually editing the XML markup in the Web.config file. What should you do? （）

• A、Modify the application settings by using the Web Site Administration Tool.
• B、Modify the application settings by using the Visual Studio property page editor for the project.
• C、Modify the application settings by using the resource editor.
• D、Modify the application settings by using the Visual Studio start options editor.