Solve problem by hand and not on excel

The estimated negative cash flows for three design alternatives are shown below. The MARR is 12% per year and the study period is four years, which alternative is best based on the IRR method? Doing nothing is not an option. Alternative EOY Capital investmen 0 Annual expenses1-4 $85,900 6,400 $64,700 13,610 $72,100 10,720 Which alternative would you choose as a base one? Choose the correct answer below. A. Alternative B B. Alternative C C. Alternative A Analyze the difference between the base alternative and the second-choice alternative. IRR (|A |-|B |)- 96, (Round to two decimal places.)