You need to ensure that SSAS can query relational data when multidimensional storage is being updated

You create a SQL Server 2008 Analysis Services (SSAS) solution.
You enable proactive caching for a partition.
You need to ensure that SSAS can query relational data when multidimensional storage is
being updated.

What should you do?

A.
Set the OnlineMode property for the partition to Immediate.

B.
Set the ProcessingMode property for the partition to Regular.

C.
Set the OnlineMode property for the partition to OnCacheComplete.

D.
Set the ProcessingMode property for the partition to LazyAggregations.