Refer to the exhibit.

%OSPF-5-ADJCHG: Process 1, Nbr 10.0.0.2 on FastEthernet0/0 from FULL to DOWN, Neighbor Down: Interface down or detached %OSPF-6-AREACHG: 10.0.0.1/32 changed from area 0 to area 1 %OSPF-4-ERRRCV: Received invalid packet: mismatch area ID, from backbone area must be virtual-link but not found from 10.0.0.2, FastEthernet0/0

What is the cause of the log messages?

A.	OSPF area change
B.	MTU mismatch
C.	IP address mismatch
D.	hello packet mismatch