Which step is taken when configuring a Cisco Expressway solution? 

Answer options:

A. Configure the Expressway-E by using a non-traversal server zone.
B. Enable static NAT on the Expressway-E only.
C. Disable H.323 mode on the Expressway-E.D. Enable H.323 H.460.19 demultiplexing mode on the Expressway-C.

B