; (B) contains a mechanism, for the purpose of preventing the cardholder from using it to purchase a gun or ammunition, that recognizes the merchant category code of a merchant and prohibits the use of such card at a place of business subject to a license to deal in firearms under section 923 of title 18, United States Code; (C) is honored, upon presentation, by merchants solely for goods or services, except for merchants described in subparagraph (B); (D) is loaded on a prepaid basis by a State, unit of local government, or gun dealer for use in a gun buyback program; (E) clearly and conspicuously bears the words THIS CARD MAY NOT BE USED TO PURCHASE A GUN OR AMMUNITION in capital and raised letters on the card