A fire extinguisher labeled with the letter "K" is specifically for which type of fires?

A fire extinguisher labeled with the letter "K" is specifically designed for use on fires that involve cooking oils and fats, typically found in commercial kitchens. Class K extinguishers are essential in environments where deep fryers and other cooking equipment can ignite flammable liquids. They contain agents that can effectively extinguish these types of fires by saponifying the fats, which helps prevent re-ignition.

Understanding the specific applications of different fire extinguishers is crucial for fire safety and effective emergency response. Other options, such as those related to office buildings, retail stores, or specially branded stores like K-Mart, do not relate to the use of Class K extinguishers or the types of fires they are designed to combat.