In 1993 the Federal Government Boosted Income Tax Rates

In 1993 the federal government boosted income tax rates.The change in tax revenue that occurred in the seven years that followed

A) supported the claims of supply-side economists and the Laffer Curve.
B) contradicted the claims of supply-side economists and the Laffer Curve.
C) caused productivity growth to slow.
D) significantly increased the size of the government's budget deficit.