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.