79.You executed the following command: RMAN> RECOVER COPY OF DATAFILE '/u01/app/oracle/oradata/orcl/users01.dbf'; Which statement regarding the above command is correct?
A.The '/u01/app/oracle/oradata/orcl/users01.dbf' data file is recovered from the image copy.
B.The '/u01/app/oracle/oradata/orcl/users01.dbf' data file is recovered from the last incremental backup.
C.Image copies of the '/u01/app/oracle/oradata/orcl/users01.dbf' data file are updated with all changes up to incremental backup SCN.
D.Image copies of the '/u01/app/oracle/oradata/orcl/users01.dbf' data file are recovered using the above command if data file recovery fails.
正确答案是C