Both (a) and (d) are correct.
127.0.0.1 is the ip of the localhost and 8000 is the port
So the url can be
(a) localhost:8000
(d) 127.0.0.1:8000
Both (a) and (d) are correct.
127.0.0.1 is the ip of the localhost and 8000 is the port
So the url can be
(a) localhost:8000
(d) 127.0.0.1:8000