The following code is for a hypothetical programming language:

$x=1$;

return $2**x$;

$\}$;

$x=x-1$;

return $f1()$;

$\}$;

$x=f1()$;

$x=f2(x)$;

Which of the following are possible results for $x$ given that the language use static $s$ but the behavior around closures is unknown?

:$x==0$

error