Utilize the input text as a context reference, choose the right relationship between Dean Foods and milk from the options. Options: product/material produced, manufacturer, distributed by, industry, position held, original broadcaster, owned by, founded by, distribution format, headquarters location, stock exchange, currency, parent organization, chief executive officer, director/manager, owner of, operator, member of, employer, chairperson, platform, subsidiary, legal form, publisher, developer, brand, business division, location of formation, creator.

Dean Foods said it was not planning to cut milk prices even though it expects volume sales to decline in the low single digits in the current quarter.

Answer: product_or_material_produced