Which statement is true regarding virtual private catalogs？（）
- A A virtual private catalog owner can create a local stored script， and have read/write access to a global stored script.
- B The virtual private catalog owner cannot create and modify the stored scripts.
- C The set of views and synonyms that make up the virtual private catalog is stored in the schema of the RMAN recovery catalog owner.
- D To perform most of the RMAN operations， the virtual catalog owner must have the SYSDBA or SYSOPER privilege on the target database.