As the network technician at Company， you need to configure DHCP snooping on a new switch. Which three steps are required？ （）
- A Configure the switch to insert and remove DHCP relay information （option-82 field） in forwarded DHCP request messages.
- B Configure DHCP snooping globally.
- C Configure the switch as a DHCP server.
- D Configure DHCP snooping on an interface.
- E Configure all interfaces as DHCP snooping trusted interfaces.
- F Configure DHCP snooping on a VLAN or range of VLANs.