Implementing Cisco IP Switched Networks (SWITCH v2-0) (#298)

When executed on a HSRP group member named Router 10, what effect does the following command have? Router10(config-if)# standby 1 track serial0 25

It will cause the router to increase its HSRP priority by 25 if the Serial0 interface on the standby router goes down
It will cause the router to shut down the Serial0 interface if 25 packets have been dropped
It will cause the router to notify Router 25 is serial 0 goes down
It will cause the router to decrement its HSRP priority by 25 if Serial 0 goes down