SELinux is a Linux feature that:
A.
monitors system file access by unprivileged users and warns them they are trying to gain access to files beyonf their permission levels set in the Mandatory Access Control policies
B.
provides only Mandatory Access Control policies. Additional access control models such as Rolebased access control require additional tools to implement
C.
enforces Mandatory Access Control policies that can restrict user space programs and system servers to the minimum amount of privileges required to operate correctly
D.
ensure that system files referenced in the Mandatory Access Control policies are not modified and alerts administrators when changes occur