4. By using incremental B/C analysis, determine which of the following mutually exclusive projects should be selected where Do Nothing is not an option and MARR is 13% per year: (25 pts.) Initial Cost, s Annual Benefit, S/Year Annual Disbenefit, S/Year Annual M&O costs, S/Year Life cycle D $250,000 $700,000 $1,200,000 $900.000 $135,000 $300,000 S500.000 $400.000 $25,000 $45,000 $80,000 S55,000 $17,000 $45,000 $70,000 S55,000 4 years 8 years 8 years 8 years