What is the outcome if static scoping was used?

int x $=10$;

int f$()$

$\{$

return x;

$\}$

int g$()$

$\{$

int x $=20$;

return f$()$;

$\}$

main$()$

$\{$

printf$($g$())$;

$\}$

$$

$30$

$20$

Error

$10$