OCP CBT Question 560

Please solve the following question.

You need to import a schema `SALES` from a remote database named `PRODDB` directly into your local database without first creating a dump file. You have a database link `PROD_LINK` defined that connects to `PRODDB`. Which `impdp` command would accomplish this?

impdp USERID=sys/oracle@localdb AS SYSDBA DUMPFILE=data_pump_dir:SALES.dmp NETWORK_LINK=PROD_LINK SCHEMAS=SALES

impdp USERID=sys/oracle AS SYSDBA NETWORK_LINK=PROD_LINK SCHEMAS=SALES

impdp USERID=sys/oracle AS SYSDBA ATTACH=PROD_LINK SCHEMAS=SALES

impdp USERID=sys/oracle@localdb AS SYSDBA TRANSPORT_DATAFILES=PROD_LINK SCHEMAS=SALES