Consider the program below. What will be the output?

#include

using namespace std;

void swap$1($int a$,$ int b$)$

$\{$

int t $=$ a;

a $=$ b;

b $=$ t;

$\}$

void swap$2($int& a$,$ int& b$)$

$\{$

int t $=$ a;

a $=$ b;

b $=$ t;

$\}$

int main$()$

$\{$

int n $=5,$ m $=-5$;

swap$1($n$,$ m$)$;

cout $<<"$n $="<<$ n $<<"$ m $="<<$ m $<<$ endl;

swap$2($n$,$ m$)$;

cout $<<"$n $="<<$ n $<<"$ m $="<<$ m $<<$ endl;

return $0$;

$\}$

Group of answer choices

n $=5$ m $=-5$

n $=-5$ m $=5$

n $=-5$ m $=5$

n $=5$ m $=-5$

n $=5$ m $=-5$

n $=5$ m $=-5$

n $=-5$ m $=5$

n $=-5$ m $=5$