1 . Given the following mutually exclusive alternatives each with economic lives of 15 years , each evaluated over a 15 - year study period . MARR is 20 %/0: Project B D Initial Cost* $20. 000 $16.000 $ 18,000 $ 12, 0.00 Annual Benefit $ 10, 000 $7, 800 $10.0100 $5. 0100 Annual Cost $5. 0.00 $2. 8:00 $5, 000 $2, 250 IRR 24.017%/ 30.69% 27. 01%/} 21. 71 %/} a . Are all these alternatives acceptable ? Why are why not , be specific . b . Using the Incremental Investment Analysis Procedure evaluate the incremental values of cash flows using* incremental PW at MARR as a proxy for incremental IR R . Show your cash flow diagrams for each incremental analysis . Which project would you recommend ? Why , be specific . C . Calculate the PW ( MARR ) for all four projects . Based on your PW calculations , is your project selection the same as you choose in part b