Which step is required when configuring Cisco Webex Hybrid Message Service?

Which step is required when configuring Cisco Webex Hybrid Message Service?
A . Add Cisco Unity Connection to Expressway-E
B . Register Expressway-C Connector Hosts to the Cisco Webex Cloud
C . Add Expressway-C and Cisco Unified CM to the Cisco Webex Cloud
D . Register Expressway-C to Cisco Unified Communications Manager

View Answer

Answer: B