Consider the following two static methods, where f$2$ is intended to be the iterative version

of f$1.$

public static int f$1($int n$)$

$\{$

if $($n$<0)$

$-$

return $0$;

$-$

else

$\{$

return $($f$1($n $-1)+$ n $*10)$;

$--$

public static int f$2($int n$)$

$\{$

int answer $=0$;

while $($n $>0)$

$\{$

answer $=$ answer $+$ n $*10$;

n $--$:

$\}$

return answer;

$-$

The method f$2$ will always produce the same results as f$1$ under which of the following

conditions?

On greater than $0$

On equals $0$

On less than $0$