Which activities are required to set up the HOT tier as well as the COLD tier for this object properly?

In an SAP BW/4HANA system you olan to leverage Data Tiering Optimization (DTO) for a DataStore object (advanced).

Which activities are required to set up the HOT tier as well as the COLD tier for this object properly? Note: there are 2 correct answers to this question.
A . Define partitions for the DataStore object (advanced)
B . Choose between Temperature Maintencance "On Partition Level" or "On Object Level"
C . Create a Data ArchivingProcess (DAP) for the DataStore object (advanced)
D . Define the planned temperature for each partition

Answer: A,C