An environmental engineer wants to evaluate three different methods for disposing of nonhazardous chemical waste: land application, fluidized-bed incineration, and private disposal contract. Use the estimates below to help her determine which has the least cost at -12% per year on the basis of an annualworth evaluation. Land $-1 IncinerationContract irst Cost 145,000$-810,000 $-48,000 310,000 6 years 0 $-142,000 0 per Year Ivage Value 1 $-91,000 ife 4 years years The environmental engineer selects e(Click to select) land application fluidized-bed incineration private disposal contract