Which one of the following is a list of devices from least efficient to most efficient

a. Light-Bulb, Automobile Engine, Power Plant, Electric Motor
b. Home oil Furnace, Light Bulb, Electric Motor, automobile
c. Power Plant (thermal), Automobile Engine, Light-bulb (Fluorescent), Light-bulb (Incandescent)
d. Power Plant (thermal), Automobile Engine, Light-bulb (Incandescent), Light-Bulb(Fluorescent)