What communication do you need to consider at the SAP web Dispatcher level?

You want to set up SAP Fiori for SAP S/4HANA following the central hub deployment .

What communication do you need to consider at the SAP web Dispatcher level? There are 3 correct answers to this question.
A . InA Search requests with BES System
B . OData requests with FES system
C . HTTP requests with SAP HANA extended application services
D . OData requests with SAP HANA
E . HTML requests with FES system

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Answer: A,B,C