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Evaluate the following SQL statements that are issued in the given order：  What would be the status of the foreign key EMP_MGR_FK？（）
A: It would be automatically enabled and deferred.
B: It would be automatically enabled and immediate.
C: It would remain disabled and has to be enabled manually using the ALTER TABLE command.
D: It would remain disabled and can be enabled only by dropping the foreign key constraint and re-creating it.

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出自：Oracle认证

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