A person may not open a sealed, closed, or fastened food container in a food store or supermarket if opening the package or container will leave the item in an unsalable condition, unless the person: Intends to purchase the item; or Has received from the proprietor authority to open the item. A person who violates this section is guilty of a misdemeanor and on conviction is subject to a fine not exceeding $25. The penalty provisions of Subtitle 12 of this title do not apply to this section.