(A) Manufacturers and all other suppliers who sell beer to wholesale distributors must give fourteen days' written notice of any price change to wholesale distributors to whom they regularly sell their products before initiating the price change. As soon after receiving said notice as practicable, the wholesale distributor must give notice of any resulting price change to its retail accounts.
(B) No manufacturer or supplier of beer to wholesale distributors may fix the price to be charged for any package by any other permit holder.
(C) No manufacturer or supplier of beer to Ohio wholesalers may differentiate in the price of beer sold to Ohio wholesalers except when such price differentials are based on reasonable business grounds. A differential price may not be based on a wholesaler's refusal to participate in a price promotion. No manufactuer or supplier of beer may require an Ohio wholesaler to participate in any price promotion.