Consider all the effects of fiscal policy. A cut in the income tax O shifts the LAS curve rightward but does not shift either the AD or SAS curve. O shifts the AD, SAS, and LAS curves rightward. shifts both the SAS and LAS curves rightward but does not shift the AD curve. O shifts the AD curve rightward but does not shift either the LAS or SAS curve. O shifts the SAS curve rightward but does not shift either the AD or LAS curve