Q$4($I believe java is used$)$

public class Factorial $\{$

public static int factorial $($int num$)\{$

return factorial$($num $-1)*$ num;

$\}$

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

System.out.println$($factorial$(3))$;

$\}$

$\}$

What is the output?

A$)6$

B$)3$

C$)0$

D$)$ There is a bug and the program will never stop