Under which circumstance(s), can the Public/Visible network share the WAN with the Private network in the Cisco UCCE Clustering over the WAN deployments?

Under which circumstance(s), can the Public/Visible network share the WAN with the Private network in the Cisco UCCE Clustering over the WAN deployments?
A . SONET WAN with multiple edge devices per Data Center to connect to the SONET ring
B . under no circumstances
C . MPLS WAN with a single edge device per Data Center that connects to multiple 1 Gbps WAN circuits and the failover between the WAN circuits is less than 500 ms.
D . MPLS WAN with multiple 1 Gbps WAN circuits and a fast 100 ms Round Trip latency between Data Centers

View Answer

Answer: B