A two-wheeled moped is a vehicle with an engine displacement...

A)of less than 50 cubic centimetres.
B)of more than 50 cubic centimetres if it is an internal combustion engine.
C)of no more than 50 cubic centimetres and a maximum speed of no more than 45 km/h.Correct
A moped, whether two- or three-wheeled, and the light quadricycle are vehicles fitted with an engine of no more than 50 cm³ displacement, if it is an internal combustion engine, and with a maximum speed by design of no more than 45 km/h.