In addition to the provisions of section 32-44-02, if a false and defamatory statement is disseminated referring to an entire group or class of agricultural producers or products, a cause of action arises in favor of each producer of the group or class and any association representing an agricultural producer, regardless of the size of the group or class. Each cause of action by a producer or an association representing an agricultural producer in such case is limited to the actual damages of the producer, injunctive relief, and exemplary damages.