5. The four alternatives shown below are being evaluated based on ROR analysis. Using the table below, answer the following questions: Incremental ROR of alternatives Initial Overall Alternative A B Cost ($) ROR A -40,000 29% B -75,000 15% 1% C -100,000 16% 7% 20% D -200,000 14% 10% 13% 12% a) If the proposals are independent, which should be selected when MARR is 16% per year? b) If the proposals are mutually exclusive, which one should be selected, if MARR = 9% per year? c) If the proposals are mutually exclusive, which one should be selected, if MARR=12 % per year