Which of the following is true about federal rules for food product date labeling in the United States?

• A. All packaged foods sold nationwide must display standardized federal sell-by, best-by, and use-by dates that are enforced uniformly by FDA, with no state-level variation permitted.
• B. The USDA mandates date labels for all refrigerated dairy products and enforces a national expiration date regimen separate from FDA rules.
• C. States cannot require any additional date labeling beyond federal law, so eggs and other fresh items have identical dating regulations in every state.
• D. Federal law generally does not require date labels on foods except for a required use-by date on infant formula; some states may impose date rules for eggs and other fresh items.

Answer: (D)