Consider the following program :
  Program P2
   var n : int :
   procedure W (var x:int)
   begin
   x = x + 1;
    print x;
   end procedure D
   begin
     varn:int;
     n = 3;
     W (n);
  End
begin       || begin P2
   n = 10;
   D;
  end
If the language has dynamic scopping and parameters are passed by reference, what will be printed by the program?