What does the following program print?

static void Main$($string$[]$ args$)$

$\{$

void fun$($int $n)$

$\{$

if $(n==)$

return;

else

$\{$

Consolentrite $($n $\%2)$;

fun$(\frac{n}{2})$;

$-3$

$\}$

fun$(13)$;

Select one

A$.1011$

B$.0100$

C$.13$

D$.6\mathrm{.}30$