Which option describes how an engineer must configure route summarization on a Cisco IOS XE OSPF-enabled network of routers?

A.	area range command under the router OSPF process of the ABR
B.	area range command under the router OSPF process of the router wanting to originate the summary route from
C.	summary-address command under the OSPF process of the ABR
D.	summary-address command under the OSPF process of the router wanting to originate the summary route from
E.	network statement for the aggregate address under the router OSPF process on the ABR
F.	network statement for the aggregate address under the router OSPF process of the router wanting to originate the summary route from