You want to reduce WAN bandwidth for audio calls from the branch office to the headquarters over the WAN link.
Which two solutions reduce WAN bandwidth for audio calls? (Choose two.)
A. Configure the Cisco Unified Communications Manager region to use G.729 instead of G.711.
B. Configure the Cisco Unified Communications Manager region to use G.711 instead of G.729.
C. Configure transcoding on the branch gateway.
D. Configure transcoding on the headquarters gateway.
