Which class does NOT exist in standard classifications?

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

Answer: (A)

Understanding standard fire classifications helps you recognize hazards and plan the right response. In the widely used fire classification system, the categories are Class A for ordinary combustibles, Class B for flammable liquids, Class C for electrical equipment, and there are additional ones like D for metals and K for cooking oils. There isn’t a standard designation called Class E. That’s why this option is the correct choice—the label doesn’t exist in the recognized set of classifications. The other options correspond to real, established classes (A, B, and C), which is why they aren’t the non-existent one.