Which the following statement is TRUE about management plug-ins?

A.
The plug-in is a package installed on the Security Gateway

B.
A management plug-in interacts with a Security Management Server to provide new features and support for new products

C.
Using a plug m offers full central management only if special licensing is applied to specific features of the plug-in

D.
Installing a management plug-in is just like an upgrade process (It overwrites existing components )