You need to back up a project workspace

You use the default project workspace template in Microsoft Office Project
Server 2007. You need to back up a project workspace. What should you do?

A.
Back up the Sharepoint_Config database by using SharePoint Central Administration.

B.
Back up the ProjectServer_Published database by using the SQL Server Management Studio.

C.
Back up the project by using the Administrative Backup function in Project Web Access.

D.
Back up the site collection by using the STSADM command.