Suppose Fiscal Authorities Raise State Income Tax Rates

Suppose fiscal authorities raise state income tax rates.As a result, disposable income falls, thereby ____, and causing __________

A) decreasing consumption spending; the aggregate demand curve to shift to the left.
B) decreasing consumption spending; a movement along a given aggregate demand curve.
C) increasing saving; the aggregate demand curve to shift to the left.
D) increasing saving; a movement along a given aggregate demand curve.