Which of the following is NOT a NFPA fire class listed in the material?

• A. Class A
• B. Class B
• C. Class E
• D. Class C

Answer: (C)

Understanding NFPA fire classifications helps you match the type of fire with the appropriate response. The standard NFPA classes cover fires from different fuel sources: ordinary combustibles (such as wood and paper), flammable liquids, electrical equipment, and metals, with cooking oils added in some naming systems. Class E is not a NFPA designation. Since NFPA labeling uses A, B, C, D (and K in many contexts), the option named Class E does not fit the NFPA fire class scheme. The other options align with NFPA classifications: Class A for ordinary combustibles, Class B for flammable liquids, and Class C for electrical fires (with Class D for metals also part of the NFPA system).