What is the output of the following program?

#include

using namespace std;

void doSomething$($int$)$;

int main$()$

$\{$

int x $=2$;

cout $<<$ x $<<$ endl;

doSomething$($x$)$;

cout $<<$ x $<<$ endl;

return $0$;

$\}$

void doSomething$($int num$)$

$\{$

num $=0$;

cout $<<$ num $<<$ endl;

$\}$

Group of answer choices

$0$

$0$

$0$

$2$

$0$

$0$

$2$

$2$

$2$

$2$

$0$

$2$