15. Life Cycle Cost and Air Pollution Questions An energy -saving device costs $20,000 to install. The expected yearly energy saving is $4,000 with a 4% escalation rate. The estimated annual repair/ maintenance fee is $1,000 with a 2% escalation rate; Assume 7% discount rate, find out year two: A) annual cash flow B) Present Value C) The yearly reduction of CO2 liberated to the atmosphere. (Assume the year two electric rate is $0.12/kwh and electric generated by gas)