Can a three-wheeled vehicle be considered a moped?

Can a three-wheeled vehicle be considered a moped?
A)No, only two-wheeled ones.
B)Yes, only two- and three-wheeled ones.
C)Yes, two-wheeled, three-wheeled, and also light quadricycles.Correct
Mopeds exist with 2 and 3 wheels. Light quadricycles are also considered mopeds.