A pictorial symbol on an extinguisher would indicate suitability for extinguishing which combination of fires: Class A, B, and C?

• A. Class A, B, and D
• B. Class A, B, and C
• C. Class A, K, D
• D. Class C, D, and K

Answer: (B)

Pictorial symbols on extinguishers show which fire types they can fight. If the symbol includes Class A for ordinary combustibles, Class B for flammable liquids, and Class C for electrical fires, the extinguisher is rated for those three kinds. ABC extinguishers use a non-conductive, versatile agent that works on these fires and is suitable around energized equipment when power is off. Other symbols would indicate different classes, like metals or cooking fires, which aren’t part of this combination. So the symbol that covers Class A, Class B, and Class C is the one that matches this question.