.You are troubleshooting a problem with two routers configured in a HSRP group. You intended to configure the routers so that Router A and Router B would each track their respective
Fa0/1 interfaces and decrement their priorities for several VLAN groups if the tracked interface went down. However, you find that Router A is not taking over as the active device for
the HSRP group on VLAN 101 when the Fa0/1 interface on Router B fails.
Which command would NOT be useful for discovering the problem?
A. show running-configuration
B. show vlans
C. show standby brief
D. show standby