In a new implementation, how is data migrated directly from an SAP ERP system to RISE with SAP S/4HANA Cloud, private edition?

In a new implementation, how is data migrated directly from an SAP ERP system to RISE with SAP S/4HANA Cloud, private edition?
A . A Remote Function Call (RFC) connects the SAP ERP source system to the SAP S/4HANA Migration Cockpit.
B. Point-to-point integration connects the SAP ERP source system to the SAP S/4HANA Migration Cockpit.
C. Extract, Transform, and Load (ETL) tools are used to migrate data from the SAP ERP source system to RISE with SAP S/4HANA Cloud, private edition (through a separate SAP HANA staging database).
D. The Software Update Manager (SUM) tool migrates the legacy database from the SAP ERP source system to RISE with SAP S/4HANA Cloud, private edition.

Answer: A