While troubleshooting DHCP configurations, a technician notices that the address pool is full of active leases although the workstations may not even be on the network. Which of the following would be the BEST solution?

A.
Disabled the DHCP server and set static IP addresses

B.
Increase the lease time on the DHCP server

C.
Shorten the lease time on the DHCP server

D.
Subnet the IP address