Which technologies can be used?

You use an Open Hub Destination to distribute SAP BW/4HANA data to a table managed by an SAP database.

Which technologies can be used? Note: There are 2 correct answers to this question.
A . Operational Data Provisioning (ODP)
B . Database Connection (DBCON)
C . Smart Data Access (SDA)
D . Remote Function Call (RFC)

Answer: C,D