Which two adjacencies are allowed to form when configuring IS-IS? (Choose two.)
A.
a Level 1 router in Area 5 connected to a Level 2 router in Area 5
B.
a Level 1 router in Area 4 connected to a Level 1 router in Area 2
C.
a Level 2 router in Area 4 connected to a Level 2 router in Area 8
D.
a Level 1 router in Area 3 connected to a Level 1 router in Area 3
Explanation: