As shown in the figure, the primary and secondary backup networking based on VRRP is wrong. In the following description of this scenario, which one is wrong?

A . In order to ensure the consistency of link switching, the firewall implements device status management based on VGMP groups.
B . The configuration and status information of firewall A is backed up to firewall B in real time through the GE0/0/3 interface.
C . Dual-machine hot backup can improve network reliability
D . The firewall GE0/0/1 interface is the heartbeat interface, and the connected line is the heartbeat line.

Answer: B