What will be the output of the program?


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What will be the output of the program?

public class Test107 implements Runnable  {     
   private int x;      
   private int y;       
   public static void main(String args[]) {       
     Test107 that = new Test107();        
     (new Thread(that)).start();        
     (new Thread(that)).start();    
   }      
   public synchronized void run() {        
     for(int i = 0; i < 10; i++) {              
       x++;       
       y++;     
       System.out.println("x = " + x + ", y = " + y); /* Line 17 */    
     }  
   } 
 }

 

A. Compilation error.
B. Will print in this order: x = 1 y = 1 x = 2 y = 2 x = 3 y = 3 x = 4 y = 4 x = 5 y = 5… but the output will be produced by both threads running simultaneously.
C. Will print in this order: x = 1 y = 1 x = 2 y = 2 x = 3 y = 3 x = 4 y = 4 x = 5 y = 5… but the output will be produced by first one thread then the other. This is guaranteed by the synchronised code.
D. Will print in this order x = 1 y = 2 x = 3 y = 4 x = 5 y = 6 x = 7 y = 8…

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