A customer is trying to configure Cisco Unified Communications Manager IM & Presence to support open XMPP federation and asks you which DNS SRV record (s) must be created in the public DNS server. Assume that the Cisco Unified Communications Manager IM & Presence is using "Default Domain" IM Address Scheme with domain customer.com. Which DNS SRV record(s) must be created? 

Answer options:

A. _xmpp-server_tcp.customer.com
B. _xmpp-client_tls.customer.com
C. _xmpp-server_tls.customer.com
D. _xmpp-server_udp.customer.com
E. _xmpp-client_tcp.customer.com A

Explanation