A、 Router A is responsible for answering ARP requests sent to the virtual IP address.

B、 If Router A becomes unavailable， Router B will forward packets sent to the virtual MAC address of Router A

C、 If another router were added to this GLBP group， there would be two backup AVGs

D、 Router B is in GLBP listen state.

E、 Router A alternately responds to ARP requests with different virtual MAC addresses.

F、 Router B will transition from blocking state to forwarding state when it becomes the AVG