Jabber cannot log in via Mobile and Remote Access. You inspect Expressway-C logs and see this error message: XCP_JABBERD Detail="Unable to connect to host `%IP%`, port 7400:(111) Connection refused" Which is the cause of this issue? 

Answer options:

A. Rich Media Session licenses are not activated on Expressway-E.B. Expressway-E is listening on the wrong IP interface.
C. The destination port for Expressway-E is set to 7400 instead of 8443 on the Expressway-C.D. The XCP Service is not activated on Expressway-E.

B