A switch is added into the production network to increase port capacity. A network engineer is
configuring the switch for DHCP snooping and IP Source Guard, but is unable to configure ip
verify source under several of the interfaces. Which option is the cause of the problem?

A.
The local DHCP server is disabled prior to enabling IP Source Guard.

B.
The interfaces are configured as Layer 3 using the no switchport command.

C.
No VLANs exist on the switch and/or the switch is configured in VTP transparent mode.

D.
The switch is configured for sdm prefer routing as the switched database management
template.

E.
The configured SVIs on the switch have been removed for the associated interfaces.