Which characteristic of DB2 for z/OS encourages the consolidation of operational and warehoused data? 

The ability to manage both operational and historical data within a single data sharing group 

The ability to use workload manager for z/OS to determine whether to send queries to the operational or warehoused data 

Use of z/OS Resource Recovery Services (RRS) to handle two-phase commit updates between operational and warehoused data 

The ability to take over data warehouse resources for business continuity if the operational database fails