A job validates credit card numbers with a reference file using a Join stage, which is hash
partitioned by card number. Examination of Job Monitor reveals that some partitions process many
more rows than others. Assuming adequate hardware resources, which action can be used to
improve the performance of the job?

A.
Replace the Join with a Merge stage.

B.
Break the input file into multiple files.

C.
Alter the number of partitions in the $APT_CONFIG_FILE.

D.
Use Round Robin partitioning on the stream and Entire partitioning on the reference.

Explanation: