A network administrator recently redistributed RIP routes into an OSPF domain. However, the
administrator wants to configure the network so that instead of 32 external type-5 LSAs flooding
into the OSPF network, there is only one. What must the administrator do to accomplish this?

A.
Configure area 1 as a NSSA area with area 1 stubnssa

B.
Configure area 1 as a stub area with area 1 stub

C.
Configure summarization on R1 with summary-address 172.16.32.0 255.255.224.0

D.
Configure summarization on R1 with area 1 range 172.16.32.0 255.255.224.0