Refer to the exhibit. After you configured routes R1 and R2 for IPv6 OSPFv3 authentication as shown, the OSPFv3 neighbor adjacency failed to establish.
What is a possible reason for the problem?
A. R2 received a packet with an incorrect area form the loopback1 interface
B. OSPFv3 area authentication is missing
C. R1 received a packet with an incorrect area from the FastEthernet0/0 interface
D. The SPI and the authentication key are unencrypted
E. The SPI value and the key are the same on both R1 and R2
