Which statement best describes Class A fires?

• A. They involve flammable solids.
• B. They involve flammable liquids.
• C. They involve electrical equipment.
• D. They involve gases.

Answer: (A)

Class A fires are fires of ordinary combustibles—solids such as wood, paper, cloth, and many plastics. These fuels burn as solids and often leave ash. The statement that describes them as involving flammable solids best matches what Class A fires use as fuel, unlike the other options which refer to different fuel types: liquids, electrical equipment, or gases.