You have been asked to configure your router to send link-related SNMP trap notifications to the network management system (NMS) located at address 172.16.17.1.

Which two commands are required? (Choose two.)

A. set snmp trap-group my-trap-group targets 172.16.17.1

B. set snmp targets 172.16.17.1

C. set snmp trap-group my-trap-group link-status

D. set snmp trap-group my-trap-group categories link