What did Arthur Laffer suggest about the USA's position on the Laffer Curve?

• A. The USA was on the upward slope, meaning higher taxes would increase revenue.
• B. The USA was not on the Laffer Curve.
• C. The USA was at the peak, meaning tax revenue was maximized.
• D. The USA was on the downward slope, meaning higher taxes could reduce revenue.

Answer: (D)