Refer to the exhibit. Which three statements accurately describe this GLBP topology？ （Choose three.）（）
- 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