In October 2008, President Bush Enacted the Alternative Minimum Tax

In October 2008, President Bush enacted the Alternative Minimum Tax Relief Act of 2008, which resulted in lower taxes on labor income. According the supply-side view, this would result in

A) an increase in the tax wedge.
B) a leftward shift in the supply of labor curve.
C) a movement along the supply of labor curve.
D) a rightward shift in the supply of labor curve.