The path taken by the intake air is

A. Carburettor (or throttle body) - air cleaner - intake manifold - intake ports - cylinders

B. Air cleaner - carburettor (or throttle body) - intake ports - intake manifold - cylinders

C. Air cleaner - intake manifold - carburettor (or throttle body) - intake ports - cylinders

D. Air cleaner - carburettor (or throttle body) - intake manifold - intake ports - cylinders

Answer: Option D