While defining an RFC destination in a direct connectivity deploym:Network integration via Managed Gateway for...

Solution:

rom the learning.sap.com content on Creating an RFC Destination for direct connectivity via the Managed Gateway (Spend & Network), the Path Prefix in the Technical Settings must be:

/cxf/receiveIDOC learning.sap.com+1

Among your provided options, the one that matches this exactly is C. /cxf/receiveERPIDOC — because it’s the only one starting with /cxf/receive, although note that the exact correct value in the documentation is

/cxf/receiveIDOC (not “ERPIDOC”). But based on closest correspondence to the documentation, the correct selection is C.