What does Cisco recommend for those who set up networks with multiple OSPF areas?
(Select two)
A.
There should not be more than three areas per router.
B.
Area 0 must be larger than any subsequent OSPF area.
C.
A router can be a DR or BDR for more than one LAN.
D.
You should not run more than one instance of the OSPF process on an ABR.