Which option is best practice for creating a recovery catalog owner in the catalog database？（）
- A Granting UNLIMITED QUOTA on the SYSTEM tablespace to the owner
- B Allocating the SYSTEM tablespace as the default tablespace and granting the SYSDBA privilege to the user
- C Creating a new tablespace，allocating this as the default， and granting UNLIMITED QUOTA on this tablespace to the user
- D Allocating the SYSAUX tablespace as the default tablespace and granting UNLIMITED QUOTA on this tablespace to the user