Which is the correct way to connect to both the target database and the recovery catalog from the RMAN command line？（） Assume that the target database is called ORCL and that the recovery catalog database is called RCAT. Also assume that the recovery-catalog owner is called RCAT_OWN. Assume the environment is configured for the ORCL database. 

• A、 rman target=/ catalog=/@rcat
• B、 rman target=/ catalog=rcat_own/rcat_own
• C、 rman target=/ catalog=rcat_own/rcat_own@RCAT
• D、 rman target=sys/robert@orcl catalog=rcat_own/rcat_own@RCAT
• E、 You cannot connect to the target database and the recovery catalog at the same time.