What are two benefits of using a single OSPF area network design?

What are two benefits of using a single OSPF area network design? (Choose two.)

A.
It is less CPU intensive for routers in the single area.

B.
It reduces the types of LSAs that are generated.

C.
It removes the need for virtual links.

D.
It increases LSA response times.

E.
It reduces the number of required OSPF neighbor adjacencies.