Compare the alternatives C and D on the basis of a present worth analysis using an interest rate of 15% per year and a study period of 10 years. Alternative $-50,000 First Cost AOC, per Year Annual Increase in Operating Cost, per Year Salvage Value Life, Years $-9,000 $-700 $6,000 $-28,000 $-5,000 $-900 $700 5 10 The present worth of alternative C is $ and that of alternative D is $ [Click to select) offers the lower present worth analysis. or D C