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What is a crucial requirement for the effective use of the APPLY CHANGES INTO statement in Change Data Capture (CDC) with Delta Live Tables?
A
The source data must be in CSV format for the statement to process changes.
B
A unique identifier or primary key must be defined for matching records between the source and target.
C
All source data must be timestamped to identify the latest changes.
D
The source and target tables must reside in the same Delta Lake.
