In Cluster XL R76; when configuring a cluster synchronization network on a VLAN interface what is the supported configuration?

In Cluster XL R76; when configuring a cluster synchronization network on a VLAN interface what is the supported configuration?
A . It is supported on VLAN tag 4095
B . It is supported on VLAN tag 4096
C . It is supported on the lowest VLAN tag of the VLAN interface
D . It is not supported on a VLAN tag

Answer: C