public class X {     

  public

public class X {     
   public static void main(String [] args) {         
     X x = new X();         
     X x2 = m1(x); /* Line 6 */         
     X x4 = new X();         
     x2 = x4; /* Line 8 */         
     doComplexStuff();     
   }     
   static X m1(X mx) {       
     mx = new X();       
     return mx;    
   }
 } 

After line 8 runs. how many objects are eligible for garbage collection?

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