Please do not use Excel to calculate this.

The economic estimates for two cranes are shown in the table below. The study period is nine years. For the case of alternative A, you would have to lease a crane for the final three years. Annual leasing costs will be $66,000 per year (plus the annual expenses of $28,800 per year). The MARR is 15% per year. What is the incremental ERR (delta ERR) for both alternatives? Which alternative should be selected? (Hint: You must purchase a crane, do nothing is not an option) A B Capital investment $272,000 $346,000 Annual expenses 28,800 19,300 Useful life (years) 6 9 25,000 40,000 Market value (end of useful life)