You see a route in your local routing table that was learned using OSPF.
Which command allows you to determine where the route originated?

A.
show ospf route

B.
show route protocol ospf

C.
show ospf database

D.
show ospf log

Explanation:
Syntax
show ospf database
<brief | detail | extensive | summary>
<advertising-router (address | self)>
<areaarea-id>
<asbrsummary>
<external>
<instanceinstance-name>
<link-local>
<logical-system(all|logical-system-name)>
<lsa-idlsa-id>
<netsummary>
<network>
<nssa>
<opaque-area>
<router>

Description
Display the entries in the Open Shortest Path First version 2 (OSPFv2) link-state database, which contains data about link-state advertisement (LSA) packets.
Options
none Display standard information about entries in the OSPFv2 link-state database for all routing instances on all logical systems.
brief | detail | extensive | summary (Optional) Display the specified level of output.
advertising-router (address | self) (Optional) Display the LSAs advertised either by a particular router or by this router.
areaarea-id (Optional) Display the LSAs in a particular area.
asbrsummary (Optional) Display summary AS boundary router LSA entries.
external (Optional) Display external LSAs.
instance instance-name (Optional) Display all OSPF database information under the named routing instance.
link-local (Optional) Display information about link-local LSAs.
logical-system (all | logical-system-name) (Optional) Perform this operation on all logical systems or on a particular logical system.
lsa-id lsa-id (Optional) Display the LSA with the specified LSA identifier.
netsummary (Optional) Display summary network LSAs.
network (Optional) Display information about network LSAs.
nssa (Optional) Display information about not-so-stubby area (NSSA) LSAs.
opaque-area (Optional) Display opaque area-scope LSAs.
router (Optional) Display information about router LSAs.