单选题Which tasks are necessary to perform a data migration using DFSMS?（）AMicrocode review and data classificationBInitialization and data classificationCMicrocode review, ACS routine, and back up of dataDData classification, ACS routine, and back up of data
单选题
Which tasks are necessary to perform a data migration using DFSMS?（）
A
Microcode review and data classification
B
Initialization and data classification
C
Microcode review, ACS routine, and back up of data
D
Data classification, ACS routine, and back up of data
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