Why would you specify Recover as a Unit in the property of a workflow in SAP Data Services?

Why would you specify Recover as a Unit in the property of a workflow in SAP Data Services?
A . To ensure that all objects of the workflow are executed during recovery including the steps that were executed successfully in the prior run
B . To ensure that the workflow is skipped during recovery if the workflow was executed successfully in the prior run.
C . To ensure that all dataflow of the workflow are executed in one single transaction during recovery
D . To ensure that each dataflow is recovered as a separate unit during the recovery execution

Answer: A