What is the reason that you want to configure VLANs on a security appliance interface?

A.
for use in multiple contextmode, where you can map only VLAN interfaces to contexts

B.
for use in conjunction with device-level failover to increase the reliability of your security
appliance

C.
to increase the number of interfaces available to the network without adding additional physical
interfaces or security appliances

D.
for use in transparent firewall mode, where only VLAN interfaces are used