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.