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單項(xiàng)選擇題

Which statement is true concerning dropping a pluggable database (PDB)?()

A. The PDB must be open in read-only mode.
B. The PDB must be in mount state.
C. The PDB must be unplugged.
D. The PDB data files are always removed from disk.
E. A dropped PDB can never be plugged back into a multitenant container database (CDB).

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