Refer to the exhibit.

The network administrator wants to reduce failover time If a switch link m VIAN 100 goes down. What should the administrator do?

• A.Lower the hello timer only on the BDR of VLAN 100.
• B.Lower the dead timer on the BDR of VLAN 100.
• C.Configure graceful restart on all of the OSPF routing devices on VLAN 100.
• D.Configure echo mode BFD on VLAN 100 on all OSPF routing devices on VLAN 100.

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