Which statement is true about DHCP snooping on the Cisco Nexus 7000 platform?

A.
DHCP snooping cannot be enabled globally and on a per-VLAN basis.

B.
By default, DHCP snooping is disabled globally and on all VLANs.

C.
You can enable DHCP snooping on a single VLAN only.

D.
For DHCP snooping to function properly, all DHCP servers must be connected to the device
through untrusted interfaces.