A rental car agency classifies the vehicles it rents into four categories: compact, mid-size, full-size and sport utility. The agency wants to record the following data for all vehicles: Vehicle,...

A rental car agency classifies the vehicles it rents into four categories: compact, mid-size, full-size and sport utility. The agency wants to record the following data for all vehicles: Vehicle, Make, Model, Year and Color. There are no unique attributes for any of the four classes of vehicles. The entity type vehicle has a relationship named Rents with customer entity type. None of the four vehicle classes has a unique relationship with any entity type.

Would you consider creating a supertype/subtype relationship for this problem? Why or why not?