XYZ Toy Company is importing some rocking horses that were hand painted in Germany.The rocking horses had been assembled in Poland using wood that had been purchased from Russia.When the rocking horses arrive in the United States, they are warehoused in a Free Trade Zone (FTZ), where they are packaged, labeled, and then shipped to various retail outlets in the United States.When they leave the FTZ, they are subject to a duty.What decision will U. S. Customs make with regard to the country of origin of the rocking horses?By what process will they arrive at that decision?