Correct option is C
A fuel injector is not typically associated with traditional spark ignition (SI) engines, which primarily use a carburettor to mix fuel and air before it enters the combustion chamber. Fuel injectors are more commonly associated with compression ignition (CI) engines or modern fuel-injected engines, where fuel is directly injected into the combustion chamber. Spark ignition engines, on the other hand, rely on spark plugs and ignition coils to ignite the air-fuel mixture. The carburettor mixes fuel with air in older SI engines, whereas fuel injectors are a feature of more modern engine technology.
