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While installing an application， the administrator is instructed to perform two final tasks prior to starting the application：  
1.Set the ownership of a file named ’control_file’ to be owned by the user ’database’ and the group ’appsrvr’.  
2.Change the permissions of ’control_file’ to 0766.  
After these two tasks have been completed， what will the file permissions look like when ’ls -l control_file’ is executed？（）