How does the SAP HANA architecture improve SAP S/4HANA system performance? Please choose the correct answer

How does the SAP HANA architecture improve SAP S/4HANA system performance? Please choose the correct answer
A . SAP HANA organizes data in line item tables and can aggregate data from these line item tables at runtime.
B . SAP HANA uses a structured hierarchical data model with a multitude of lean prebuilt aggregated tables to write efficient code.
C . SAP HANA allows you to build aggregate tables on top of aggregates and, in addition, special versions of the database tables to support special applications.
D . SAP HANA makes extensive use of database indexes providing common access paths to data in order to improve access speed.

Answer: A