1. public class test {  
	2. public static string output = “” 
	3.  
	4. public static void foo(int i) {  
	5. try {  
	6. if(i= =1) {  
	7. throw new Exception ();  
	8. }  
	9. output += “1”;  10. )  
	11. catch(Exception e) { 
	12. output += “2”;  
	13. return;  
	14. )  
	15. finally (  
	16. output += “3”; 
	17. )  
	18. output += “4”;  
	19. )  
	20.  
	21. public static void main (string args) (  
	22. foo(0);  
	23. foo(1);  
	24.  
	25. )  
	26. )  
	What is the value of the variable output at line 24?()
 
                            