The OSPF External LSA for prefix x.x.x.x exists in the OSPF database, but the prefix is not
installed in the routing table. Which are possible explanations?

A.
ASBR origination the LSA is not reachable.

B.
Route to the Forwarding Address is an internal OSPF route.

C.
Inbound distribute-list is configured under the ospf process and it is denying x.x.x.x

D.
Route to the ASBR does not follow the same path as the one to the Forwarding Address.

E.
Route to the Forwarding Address in not an internal OSPF route.