Which statement is true when one of its virtual gateway redundancy with an AVF has failed?

Which statement is true when one of its virtual gateway redundancy with an AVF has failed?
A . If an AVF has failed, one of the primary virtual forwarders in the listen state assumes responsibility for the virtual MAC address.
B . If an AVF has failed, one of the secondary virtual forwarders in the listen state assumes responsibility for the virtual MAC address.
C . If an AVF has failed, one of the secondary virtual forwarders in the listen state will also fail.
D . If an AVF has failed, one of the primary virtual forwarders in the listen state will also fail.

Answer: B