Which of the following is true about Class D fires?

Class D fires specifically refer to fires that involve combustible metals, such as magnesium, titanium, potassium, sodium, and others. These metals can ignite and burn at extremely high temperatures and do not extinguish easily with conventional fire-fighting agents. This characteristic distinguishes them from other classes of fires, each of which corresponds to different types of combustible materials.

For example, Class A fires are associated with ordinary combustibles like wood, paper, and textiles; Class B fires involve flammable liquids such as gasoline or oil; and Class C fires deal with electrical equipment. Understanding the nature of Class D fires is crucial for appropriate fire safety measures and emergency response, as the wrong kind of extinguishing agent can exacerbate the problem rather than mitigate it.