A staging server is critical for an administrator to test updates without introducing risk into a production environment.  Which of the following steps should an administrator take to test on a staging server？（）

• A、Create and Configure a WebSphere Commerce Instance on the staging server
• B、Run the Stage Copy Utility to copy production server data into the staging server.
• C、Run the Stage Propagate Utility to propagate the staging server with production server data 
• D、Create and configure a Staging database