How do you enable interface fe-0/0/0 under the [edit protocols isis] level to form both a Level 1 and Level 2 adjacency?()
A、set interface fe-0/0/0.0
B、set interface fe-0/0/0.0 all level
C、set interface fe-0/0/0.0 level 3 enable
D、set interface fe-0/0/0.0 level 1 level 2