单选题

A PL/SQL procedure queries only those columns of a redefined table that were unchanged by the online table redefinition.  What happens to the PL/SQL procedure after the online table redefinition?()

A It remains valid.

B It becomes invalid for all options of online table redefinition but automatically gets revalidated the next time it is used.

C It becomes invalid for all options of online table redefinition and is automatically recompiled during online redefinition of the table.

D It becomes invalid only if the storage parameters have been modified and it automatically gets  revalidated the next time it is used.

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