Which one of the following code is correct $($running without error$)$ in C programming?

#include $$stdio$.$h$$

int main$()$

I

int $r,$ ba$,$ expr;

printf$("$In Enter the Base and Exponent numbers: $(n^n)$;

scanf$("\%$d $\%$d$",$ &ba$,$ &expr$)$;

$r=$pow$(ba,$expr$)$;

printf$("|n|$ The result of $\%$d Power $\%$d $=\%$d $",$ ba$,$ expr $,$r$)$;

return $0$ ;

$\}$

#include $\frac{r}{?}$

$lnr=$pow$(ba,$expr$)\frac{\frac{?}{?}}{?}\frac{?}{?}$

$ln\frac{?}{?}$

$=r($:$n^{\text{'}\text{'}})r$