Use present worth analysis to determine which option should be taken. i=7%. Draw CFD, show work. Make a statement of conclusion and why. Around lake Lenth 15km First Cost $5,000/km Maintenance $200/km/yr Useful life 15 yrs Salvage $3,000/km Annual Power loss $500/km Annual Taxes 2% of first cost Under Lake Lenth 5km First Cost $25,000/km Maintenance $400/km/yr Useful life 15 yrs Salvage $5,000/km Annual Power loss $500/km Annual Taxes 2% of first cost