Which two statements about TI zones over FC routers are true? (Choose two.)

A.
Traffic isolation zones failover mode must be enabled in the edge fabrics and backbone fabric.

B.
Traffic isolation over FC-FC routing is supported from edge fabric to edge fabric.

C.
Traffic isolation zones failover mode must be disabled in the edge fabrics.

D.
Traffic isolation over FC-FC routing is supported from backbone devices to edge devices.