Why would a rogue host that is running a DHCP server on a campus LAN network present a security risk？（）

• A、It may allocate IP addresses from an unknown subnet to the users.
• B、All multicast traffic can be sniffed by using the DHCP multicast capabilities.
• C、The CPU utilization of the first hop router can be overloaded by exploiting DHCP relay open ports.
• D、A potential man-in-the-middle attack can be used against the clients.