Which configuration on XR2 provides R1 with only the minimum routing information to reach the rest of the network?

A.	Router isis ABC interface GigabitEthernet0/0/0/1 circuit-type level-2-only
B.	Router isis ABC interface GigabitEthernet0/0/0/0 circuit-type level-1-2
C.	Router isis ABC interface GigabitEthernet0/0/0/1 circuit-type level-1
D.	Router isis ABC interface GigabitEthernet0/0/0/0 circuit-type level-1