Which statement would explain why the overlay interface on an OTV edge device is not in the up state?
A.
The site identifiers are identical within a multihomed site.
B.
Multicast groups are not mapped to a range of SSMaddresses to carry the multicast traffic.
C.
An adjacency server is not configured for connectivity over a multicast transport.
D.
The OTV IS-IS metrics do not match across all adjacent OTV edge devices.