（109）Which statement describes the effect of table redefinition on the triggers attached to the table?

A. All triggers on the table are invalidated and are automatically revalidated with the next DML execution on the table.

B. All triggers on the table are invalidated and must be manually recompiled before the next DML execution on the table.

C. All triggers on the table remain valid.

D. Only triggers that are affected by the changes to the structure of the table are invalidated and automatically revalidated with the next DML execution on the table.

答案：（A）