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Your multitenant container database (CDB) contains pluggable databases (PDBs), you are connected to the HR_PDB. You execute the following command: SQL > CREATE UNDO TABLESPACE undotb01 DATAFILE ‘u01/oracle/rddb1/undotbs01.dbf’ SIZE 60M AUTOEXTEND ON; What is the result?（）
A:It executes successfully and creates an UNDO tablespace in hr_pdb.
B:It falls and reports an error because there can be only one undo tablespace in a cdb.
C:It fails and reports an error because the CONTAINER=ALL clause is not specified in the command.
D:It fails and reports an error because the CONTAINER=CURRENT clause is not specified in the command.
E:It executes successfully but neither tablespace nor the data file is created.

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出自：Oracle认证

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