¹USC debated which by-products should be included in the BFP options. It was agreed that competitive pay prices such as the M-W or A/B series have by-products implied in them. The plants receive receipts from the by-products they manufacture. All plants do not manufacture all products. For example, some cheese plants manufacture dry whey powder, some manufacture other whey products while others feed or dispose of it by another means within EPA guidelines. Product formulas require decisions on which by-products to explicitly include with the appropriate make allowance.