Michael Vincent and Elizabeth Matthews, economists at Macro Associates, conduct research into the effects of fiscal policy on the economy. Vincent states that government taxing decisions affect the supply of labor. Matthews contends that government taxing decisions affect potential GDP. Regarding the statements made by Vincent and Matthews: Vincent Matthews（）①A. Correct Incorrect ②B. Incorrect Correct ③C. Correct Correct
A. ①
B. ②
C. ③