In the scenario below, the left$($P$3)$ and right$($P$4)$ clients communicate with a server

$($P$1)$ using UDP sockets. The same socket at the server is used to communicate with

both clients. Port numbers $7378,6667,$ and $7293$ are used by applications P$1,$ P$3,$ and

P$4,$ respectively. Consider the four transport$-$layer packets $$ A$,$ B$,$ C$,$ and D $$ shown in

the figure below.

Provide source and destination port numbers for the transport layer packets A$,$ B$,$ C$,$

and D$.$