(a) Every person who sells tobacco products at retail shall post conspicuously and keep so posted at the place of business a sign, no smaller than ninety-three and one-half (93½) square inches, to ensure that it is likely to be read at each point of sale, stating the following:
(b) Unless another notice is required by federal law, the notice required by this section and the notice required by § 39-15-411 shall be the only notice regarding tobacco products required to be posted or maintained in any store that sells tobacco products at retail.