Which action will immediately clear the invalid LSA from the network without waiting for the LSA to time out or resetting the OSPF sessions on the router?

An OSPF database contains two router LSAs with identical link information indicating that
one LSA is not valid. Which action will immediately clear the invalid LSA from the network
without waiting for the LSA to time out or resetting the OSPF sessions on the router?

A.
user@router# deactivate protocols ospf user@router# commit user@router# activate
protocols ospf user@router# commit

B.
user@router> restart routing

C.
user@router> clear ospf database purge

D.
user@router> clear ospf database

Explanation: