As used in sections 924.20 to 924.30 of the Revised Code:
(A) "Grain" means wheat, barley, rye, or oats.
(B) "Handler" means a person who is in the business of agricultural commodity handling, as defined in section 926.01 of the Revised Code, of grain.
(C) "Producer" means a person who is in the business of producing, or causing to be produced, grain for commercial sale.
(D) "Rule" means a rule adopted under section 924.25 of the Revised Code.