A DHCP server in the enterprise network is being used to allocated IP addresses to hosts. An administrator discovers however that some hosts are obtaining IP addresses outside of the scope of the DHCP server's address pool.What are the possible reasons for this? (Choose three).

A. Another DHCP server exists in the network and is allocating IP addresses to hosts that happen to be within a closer proximity than the authorized DHCP server. B. The hosts were unable to discover a DHCP server and therefore generated their own address in the 169.254.0.0 address range. C. The hosts were unable to discover a DHCP server and therefore generated their own address in the 127.254.0.0 address range. D. All addresses from the DHCP pool have been assigned.