Which routers should you verify first to ensure that the configurations are correct for generating type 3 LSAs?

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?
Select the best response.

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