Which two commands are required?

You have been asked to configure your router to send link-related SNMP trap notifications to the network managemetn system (NMS) located at address 172.16.17.1
Which two commands are required?

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