Any person convicted of violating the provisions of §§ 46.2-895 through 46.2-897 shall, if such accident results in injury to or the death of any person, be guilty of a Class 6 felony. If such accident results only in damage to property, the person so convicted shall be guilty of a Class 1 misdemeanor; however, if the vehicle or other property struck is unattended and such damage is less than $250, such person shall be guilty of a Class 4 misdemeanor. A motor vehicle operator convicted of a Class 4 misdemeanor under this section shall be assigned three demerit points by the Commissioner of the Department of Motor Vehicles.