Compare the alternatives C and D on the basis of a present worth analysis using an interest rate of 15.00% per year and a study period of 10 years. (Include a minus sign if necessary.) Alternative C D First Cost $-50000 $-21000 AOC, per Year $-8000 $-9000 Annual Increase in Operating $-1500 $-200 Cost, per Year Salvage Value Life, Years $14000 $1500 10 5 The present worth of alternative C is $ and that of alternative D is $