Acattle-producing state adopted a statute requiring any food service business operating in the state to serve beef raised in the united states. a licensed hot dog vendor who worked at a football field within the state and who had been buying hot dogs made with foreign beef for the past several years estimated that switching to an all-beef hot dog made from united states beef would reduce his profits by 10%. an attorney hired by the vendor to challenge the statute discovered during research into the case that most of the footballs used at the football field at which the vendor worked were made of foreign leather. which of the following grounds is the vendor's best argument against the constitutionality of the state statute? a the statute burdens foreign commerce. b the statute violates equal protection guarantees because it is not rational to prohibit the sale of foreign beef but not foreign leather. c the statute substantially interferes with the vendor's right to earn a living under the privileges or immunities clause of the fourteenth amendment. d the statute constitutes a taking without due process of law.