Atown in a rural state facing financial difficulties passed a variety of "sin taxes," including one aimed at electronic game arcades frequented by local juveniles. the tax is a one cent per game tax imposed on the manufacturers of the games based on the estimated number of plays over a machine's lifetime. there are no electronic game manufacturers in the state. which of the following constitutional provisions would support the best argument against enforcement of the tax? a the equal protection clause. b substantive due process. c the privileges and immunities clause of article iv. d the commerce clause