You are developing a verification plan for an upcoming OSPF implementation. Part of this plan is
to verify the status of type 3 LSAs within the network. Which routers should you verify first to
ensure that the configurations are correct for generating type 3 LSAs?

A.
Internal routers within the backbone area (area 0)

B.
Internal routers within the NSSAs

C.
Internal routers within the stubby areas

D.
ASBRs

E.
ABRs

F.
DRs and BDRs

Explanation:
Type 3 LSA (Summary LSA) is advertised by the ABR of originating area to advertise network
from other areas so we should check the ABRs first.