An organization will be extending its existing on$-$premises infrastructure into the cloud. The design consists of a transit VPC that contains stateful $$rewalls that will be deployed in a highly available con$$guration across two Availability Zones for automatic failover.What MUST be con$$gured for this design to work? $($Select two.$)$

A $.$ A di$$erent Autonomous System Number $($ASN$)$ for each $$rewall$.$

B $.$ Border Gateway Protocol $($BGP$)$ routing

C $.$ Autonomous system $($AS$)$ path prepending

D $.$ Static routing

E $.$ Equal$-$cost multi$-$path routing $($ECMP$)$