Which of the Following Statements Regarding OSPF Route Filtering Is

Which of the following statements regarding OSPF route filtering is false?

A) The filtering of Type 3 LSAs needs to be configured on ABRs in OSPF.
B) In a NSSA, when external routes are imported to the OSPF router and LSAs are advertised to its neighbors, LSA filtering can be performed on the ASBR or ABR.
C) All LSAs, except Grace LSAs, can be filtered based on interfaces in the inbound and outbound directions.
D) When routes are calculated based on the LSDB, the filter-policy import command can be executed to filter routes. This filtering mode affects only the addition of routes in the routing table, and has no impact on the OSPF LSDB.