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How should the listener be configured so it retrieves each row at most one time?

A Database On Table Row listener retrieves data from a CUSTOMER table that contains a primary key userjd column and an increasing kxjin_date_time column. Neither column allows duplicate values.

How should the listener be configured so it retrieves each row at most one time?
A . Set the watermark column to the bgin_date_time column
B . Set the target value to the last retrieved login_date_time value
C . Set the target value to the last retrieved user_jd value
D . Set the watermark column to the user_Id column

Answer: A

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