Given the following program:

$====$ BEGIN CODE $====$

int mul$1($int i$)\{$ i $=$ i $*2$; return i; $\}$

int mul$2($int $*$a$\_$pointer$)\{$

$*$a$\_$pointer $=(*$a$\_$pointer$)*2$;

return $*$a$\_$pointer;

$\}$

int main$($int argc, char $*$argv$[])\{$

int i $=2$;

int x $=$ mul$2($&i$)$;

int y $=$ mul$1($i$)$;

int z $=$ mul$2($&i$)$;

printf$("\%$d

$",$ i$)$;

return $0$;

$\}$

$====$ END CODE $====$

What is the output printed out to the terminal?

Question $11$ options:

$16$

$4$

$2$

$8$