What are prerequisites for enabling communication between a standalone SAP Web Dispatcher and an AS ABAP-based SAP system? Note: There are 2 correct answers to this question.

What are prerequisites for enabling communication between a standalone SAP Web Dispatcher and an AS ABAP-based SAP system? Note: There are 2 correct answers to this question.
A . Identification of the HTTP port of the ABAP message server
B . Activation of ICF service /sap/public/icf_info/icr_groups
C . Identification of the HTTP port of the PAS instance’s ICM process
D . Activation of ICF service /sap/public/ping

Answer: A,B