What will print to the console when the following code runs?

public class Main$\{$

public static void main$($String$[]$ args$)\{$

int num$1=12$;

int num$2=3$;

System.out.println$($num$1+$ num$2)$;

$\}$

$\}$

What will print?

Multiple$-$choice options $($select one$)$:

A$.$

Error message

B$.$

$3$

C$.$

$12$

D$.$

$15$