A department decided to change the Gnome Display Manager's greeting. Which of the following configuration files should an administrator edit?

`/etc/gnome/greeting` is not a standard GDM configuration file for the greeting message.

`/opt/gnome/share/greeting` is not a standard GDM configuration file; `/opt` is usually for optional software packages.

`/etc/X11/gmd.conf` (assuming `gdm.conf`) contained general GDM settings, but direct greeting text or scripts were typically handled elsewhere.

Historically, particularly in older versions of GDM, the `/etc/X11/gdm/Init/Default` script was executed during GDM initialization. Administrators could modify this script to customize aspects of the login screen, including the displayed greeting message, before the session actually started.