Which of these is an implementation guideline when deploying the IP Source Guard feature in an environment with multiple switches?

A.
Do not configure IP Source Guard oninterswitch links.

B.
Configure PACLs for DHCP-addressed end devices.

C.
IP Source Guard must be configured in the trunksubconfiguration mode to work on interswitch links.

D.
Configure static IP Source Guard mapping for all access ports.