How does a DHCP server choose which IP address to assign to a client?

a$)$ It chooses the first available IP address in the scope.

b$)$ It chooses a random IP address in the scope.

c$)$ It uses a round$-$robin algorithm to assign IP addresses.

d$)$ It checks its cache for the client MAC address, and if found assigns the same IP

address, otherwise it assigns a random IP address in the scope.