Your network design currently consists of a single OSPF backbone area. You are asked to reduce
the size of the OSPF link-state database.
Which two steps allow you to accomplish this task? (Choose two.)

A.
Include LSA export summarization policies on all participating ASBRs.

B.
Define multiple backbone areas and interconnect them using virtual links.

C.
Define multiple nonbackbone areas and connect them to the backbone area.

D.
Include route summarization on the ABRs participating in the configured areas.