(a) The board may not adopt rules restricting advertising or competitive bidding by a person regulated by the board except to prohibit false, misleading, or deceptive practices by that person.
(b) The board may not include in rules to prohibit false, misleading, or deceptive practices by a person regulated by the board a rule that:
(1) restricts the use of any advertising medium;
(2) restricts the person's personal appearance or use of the person's voice in an advertisement;
(3) relates to the size or duration of an advertisement used by the person; or
(4) restricts the use of a trade name in advertising by the person.