Which three are recommended options on an X5 Exadata Database machine, for staging files that will be loaded as external tables?
A. on an ACFS file system stored in a staging database on the Database Machine
B. a ZFS over NFS file system mounted on a database server where the external table will be accessed
C. an Exadata-based ACFS file system on the Database Machine
D. a DBFS file system stored in a staging database on the Database Machine
E. on local storage on one or more storage servers that are accessible to the database server where the load will be performed
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