Which of the following code snippets correctly gets the port

number of a DatagramPacket?

a$.$ int port $=$ packet.getSourcePort$()$;

b$.$ none of these

c$.$ int port $=$ packet.getRemotePort$()$;

d$.$ int port $=$ packet.getPort$()$;

e$.$ int port $=$ packet.getLocalPort$()$;