An alternative to CFL bulbs and incandescent bulbs are light-emitting diode (LED) bulbs. A 100 W incandescent bulb can be replaced by a 20 W LED bulb. Both produce 1600 lumens of light. Assuming the cost of electricity is $0.12 per kilowatt hour, how much does it cost to run the bulb for one year if it runs for four hours a day? Thank you.