Which three statements are true about DAI？（）

A. DAI intercept all ARP packets on untrusted ports
B. DAI determines the validity of an ARP packet based on the valid MAC address-to-IP address bindings stored in the DHCP Snooping database.
C. DAI is used to prevent against a DHCP Snooping attack.
DAI forwards all ARP packets received on a trusted interface without any checks.
E. DAI forwards all ARP packets on untrusted ports.
F. DAI determines the validity of an ARP packet based on the valid MAC address-to-IP address bindings stored in the CAM table.