Regarding the description of the preemption function of VGMP management, which of the following is incorrect?

Regarding the description of the preemption function of VGMP management, which of the following is incorrect?
A . By default, the preemption function of the VGMP management group is enabled.
B . By default, the preemption delay time of the VGMP management group is 40s.
C . Preemption means that when the original failed master device recovers, its priority will be restored. At this time, its status can be preempted as the master again.
D . When the VRRP backup group is added to the VGMP management group, the original preemption function on the VRRP backup group becomes invalid.

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Answer: B