What will the foo function print if called with an actual parameter value of $5?$

int foo$($int n$)$

$\{$

if $($n $>0)$

std::cout $<<$ foo$($n$-1)<<""$;

return n;

$\}$

int main$()$

$\{$

foo$(5)$;

$\}$

Group of answer choices

An infinite sequence of zeros

$01234$

$43210$

$4$