Which characteristic of DB2 for z/OS encourages the consolidation of operational and warehoused data?
A. The ability to manage both operational and historical data within a single data sharing group
B. The ability to use workload manager for z/OS to determine whether to send queries to the operational or warehoused data
C. Use of z/OS Resource Recovery Services (RRS) to handle two-phase commit updates between operational and warehoused data
D. The ability to take over data warehouse resources for business continuity if the operational database fails
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