Which of the following is NOT an example of Class A combustibles?

Class A combustibles are ordinary combustible materials that include substances such as paper, wood, and rubber. These materials ignite easily and can sustain a fire, making them classified as Class A.

Grease, on the other hand, falls into a different category of combustibles. It is typically classified as a Class K fire hazard, which refers specifically to fires involving cooking oils and fats. Because of its composition, grease has different combustion properties and risks associated with it compared to the Class A materials. Understanding this classification is vital because it influences the type of extinguishing agents used in firefighting, as different classes of fires require different techniques and equipment for effective suppression.