正解:B
Virtual Router Redundancy Protocol (VRRP) provides first hop redundancy by allowing multiple routers to function as a single virtual router, with one designated as the master router and others as backups. In this exhibit, VRRP should be configured on interfaces that are connected to the same network segment as PC-01 and PC-02 for them to have redundancy in case one of their default gateways fails.
Since both PCs are in different subnets, we need VRRP configured on both Edge routers' interfaces that connect towards ASW-01 where each PC resides. Therefore, VRRP commands should be applied on G0/0 interface of Edge-01 which connects it to ASW-01 for PC-01's subnet, and similarly on G0/0 interface of Edge-02 which connects it to ASW-01 for PC-02's subnet. References: Implementing and Operating Cisco Service Provider Network Core Technologies (SPCOR) v1.1