A two-wheeled vehicle fitted with an internal combustion engine may be classified as a motorcycle provided that...
A)it has at least two seats, including the driver's.
B)it can reach a maximum speed greater than 40 km/h.
C)its engine displacement is greater than 50 cubic centimetres.Correct
A two-wheeled motorcycle is a two-wheeled vehicle without a sidecar, fitted with an engine with a displacement greater than 50 cm³ if it is an internal combustion engine, and/or with a maximum speed by construction greater than 45 km/h.