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Which of the following statement is correct about the program given below?


  #include
   int x, y; 
   class BixTest 
   {   
       public:    
       BixTest(int xx = 0, int yy = 0)     
       {       
            x = xx;      
            y = yy;       
            Display();      
        }      
        void Display()    
        {        
          cout" " " ";     
            } 
         }; 

         int main() 
         {  
         BixTest objBT(10, 20);    
         int „ž = x;     
         int &ry = y;     
         ry = x;     
         rxr= y;     
         coutreturn 0; 
     }