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A data engineer observed that some unused data files in a Delta table's directory were not deleted after executing the VACUUM command, despite others being removed. What could be the reason for this partial deletion?
A
The deleted data files were larger than the default size threshold, while the remaining files are smaller and cannot be deleted.
B
The deleted data files were newer than the default retention threshold, while the remaining files are older and cannot be deleted.
C
The deleted data files were older than the default retention threshold, while the remaining files are newer and cannot be deleted.
D
The deleted data files were smaller than the default size threshold, while the remaining files are larger and cannot be deleted.
E
More information is needed to determine the correct answer.
