It is unlawful for any person engaged in commerce:

A. to pay or contract for payment of anything of value to or for the benefit of a customer as compensation for any services or facilities furnished by or through the customer in connection with the processing, handling, sale or offering for sale of any products or commodities manufactured, sold or offered for sale unless the payment or compensation is available on proportionally equal terms to all other customers competing in the distribution of the products or commodities;

B. to discriminate in favor of one purchaser against another purchaser of a commodity bought for resale, with or without processing, by contracting to furnish or furnishing, or by contributing to the furnishing of any services or facilities connected with the processing, handling, sale or offering for sale of the commodity purchased on terms not accorded to all purchasers on proportionally equal terms; or

C. knowingly to induce or receive a discrimination in price which is prohibited by the Price Discrimination Act.