Which actions should be performed by an Administrator to delete some portlets that exist in IBM Tivo

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Which actions should be performed by an Administrator to delete some portlets that exist in IBM Tivoli Netcool/OMNIbus V7.3 Web GUI that are not being used by any users?

A.
The Administrator can delete only a copy of the portlet.

B.
From Settings –> Portlet Management, select the portlet and delete.

C.
Remove theportletname.portlet file under install_dir/_uninst/TIPInstallOMNIbusWebGUI/Portlet directory.

D.
Edit theportlets file under install_dir/_uninst/TIPInstallOMNIbusWebGUI/Portlet directory and remove the names of the portlet that have to be deleted.