Which statement about California eggs is not true?

The statement that cartons marked Grade B may be labeled as "farm eggs" is not true, because labeling regulations require specific qualifiers for terms like "farm eggs" and the Grade designation. Grade B eggs, which have lesser quality compared to Grade A eggs, indicate lower standards in appearance and quality. This means that such eggs, which do not meet the appearance and quality standards typically associated with "farm-fresh" products, cannot legitimately be marketed with that label.

This understanding is crucial since it protects consumers from misleading information about the quality and freshness of eggs they are purchasing. The other statements align with accurate regulations; for example, all eggs must indeed adhere to federal safety standards to ensure they are safe for consumption, they are required to be refrigerated during transport to prevent spoilage, and farm-fresh eggs can be available year-round due to various farming practices, despite seasonal fluctuations.