Compare the alternatives C and D on the basis of a present worth analysis using aninterest rate of 12% per year and a study period of 10 years.

Alternative C D First Cost $-44,000 $-34,000 AOC, per Year $-12,000 $-7,000 Annual Increase in Operating Cost, per Year $-1,200 $-1,500 Salvage Value $5,000 $1,200 Life, Years 10 5