Which line is incorrect in the following program:

public class Test $\{$

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

int $i=j=k=2$;

System.out.println$($i$+$n$"+$j$+$n $(i+k)$;

$\}$

$\}$

$2$

$1$

$4$

$3$