How dose a DHCP server dynamically assign IP address to host?

A.
Addresses are allocated after a negotiation between the server and the host to determine the
length of
the agreement.

B.
Addresses are assigned for a fixed period of time.At the end of period, a newquest for an
address must
be made , and another address is then assigned.

C.
Addresses are leased to host.A host will usually keep the same address by periodically
contacting the
DHCP sever to renew the lease.

D.
Addresses are permanently assigned so that the host uses the same address at all times.