The estimated negative cash flows for three design alternatives are shown below. The MARR is 10% per year and the study period is four years. Which alternative is best based on the IRR method? Doing nothing is not an option. Cl Capital 0 $79,800 $65,500 $72,100 investment Annual expenses 1 - 4 7,500 12,870 10,420 Which alternative would you choose as a base one? Choose the correct answer below. Alternative C Alternative A V Alternative B Analyze the difference between the base alternative and the second-choice alternative. IRR A(|:| - I:|)= D90. (Round to two decimal places.)