Refer to the exhibit. After you apply the given configurations to R1 and R2 you notice that OSPFv3 fails to start. Which reason for the problem is most likely true ?

For OSPFv3 neighbors to establish an adjacency and for the routing process to start, the connected interfaces must be configured in the same OSPF area. R1 is configured with area 0 for Gig0/0, while R2 is configured with area 1 for Gig0/0, causing an area mismatch.

The IPv6 network addresses (2001:DB8:C:1::/64) on R1 (2001:DB8:C:1::1) and R2 (2001:DB8:C:1::2) are on the same subnet and correctly configured for connectivity.

OSPFv3 does not use autonomous system numbers for neighbor adjacency; it uses a process ID, but that does not need to match between neighbors to form an adjacency.

While router IDs must be unique within an OSPF domain, they do not need to match between neighbors, and a mismatch wouldn't prevent the OSPFv3 process from starting or neighbors from attempting to form. They are used for identifying the originating router of LSAs.