Considering the following skeletal program:

program main;

var x : integer;

procedure sub$1$;

procedure sub$2$;

$...$

end; $\{$sub$2\}$

$...$

end; $\{$sub$1\}$

procedure sub$3$;

var x : integer;

procedure sub$4$;

var x : integer;

$....$

end; $\{$sub$4\}$

$...$

end; $\{$sub$3\}$

$...$

end; $\{$main$\}$

Assuming the following execution of the program:

main calls sub$3$

sub$3$ calls sub$4$

sub$4$ calls sub$1$

sub$1$ calls sub$2$

Assuming static scoping, state which declaration of x $($by line #$)$ is used to reference x in sub$1,$ sub$2,$ sub$3,$ sub$4,$ main

Do the same for dynamic scoping as well.