Refer to the exhibit. On the basis of the configuration provided, how are the Hello packets
sent by R2 handled by R5 in OSPF area 5?

A.
The Hello packets will be exchanged and adjacency will be established between routers
R2 and R5.

B.
The Hello packets will be exchanged but the routersR2 and R5 will become neighbors
only.

C.
The Hello packets will be dropped and no adjacency will be established between routers
R2 and R5.

D.
The Hello packets will be dropped but the routers R2 and R5 will become neighbors.

Explanation:
Recall that in OSPF, two routers will become neighbors when they agree on the following:
Area-id, Authentication, Hello and Dead Intervals, Stub area flag.
We must specify Area 5 as a stub area on the ABR (R2) and all the routers in that area (R5
in this case). But from the output, we learn that only R2 has been configured as a stub for
Area 5. This will drop down the neighbor relationship between R2 and R5 because the stub
flag is not matched in the Hello packets of these routers.