From a British mans Point Of View
OK Slight Confusion here Im British and Our Fire Extinguishers Classes are
Class A: SOLIDS such as paper, wood, plastic etc
Class B: FLAMMABLE LIQUIDS such as paraffin, petrol, oil etc
Class C: FLAMMABLE GASES such as propane, butane, methane etc
Class

METALS such as aluminium, magnesium, titanium etc
Class E: Fires involving ELECTRICAL APPARATUS
Class F: Cooking OIL & FAT etc
OK SO If your PC Was On Fire I think the Answer in the Book is given as use CLASS C.
but in the UK it would be Class D METALS such as aluminium, magnesium, titanium etc
so is the test based around the American Standard being Class C?
Or if Im taking it in the UK would it be the UK standard?
Im Assuming its the American Standard Class C?
but then it makes it more confusing from my point of view!