is it so difficult to design a "fair" tax structure?A$.$ Fairness is relatively simole to measure. It is difficult to desian a "fair" tax structure because the federal and state governments have concerns that tax revenues will decline significantly using a "fair" tax structure $.$Fairness is verv oblective in nature and is easy measure. The difficulty in designing a "fair" tax structurecomes from the fact that tax revenues will decline significantly using a "fair" tax structure.O c$.$Fairness is relative in nature and is extremely difficult to measure. What one person may conclude is fair in aparticular situation may be considered totally unfair by another person D$.$It is difficult to desian a "fair" tax structure because federal.