What is a valid reason to leveraging SAP HANA Native Storage Extension (NSE) in the SAP BW/4HANA Data Tiering Optimization (DTO) concept?

What is a valid reason to leveraging SAP HANA Native Storage Extension (NSE) in the SAP BW/4HANA Data Tiering Optimization (DTO) concept?
A . To reduce the SAP HANA memory consumption of data that is only used infrequently"
B . To create an offline archive for data, to ensure legal requirement are fulfilled
C . To aggregate data and improve the reporting performance for year-to-date values
D . To move historical data that only needs to be read exceptionally to an external storage

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Answer: A