What does SAP backend integrations provide out-of-the-box? (3)

What does SAP backend integrations provide out-of-the-box? (3)
A . SAP ERP integration scenarios
B . SAP S/4HANA integration scenarios
C . SAP Customer Activity Repository (CAR) integration
D . An additional package for the integration with SAP CRM
E . Integration with SAP Marketing Cloud

Answer: A,C,E