$4.($Marks: $20)$ You have been asked to evaluate several investment opportunities for the biotechnology company for which you work. These potential investments concern a new process to manufacture a new, genetically engineered pharmaceutical. The financial information on the process alternatives is as follows: Case Capital Investment $($$ million$)$ After$-$Tax Cash Flow $($$million$/$yr$)$ Investment $17519$ Investment $29022$ Investment $310024$ Investment $410526$ The assumed plant life is $12$ years and all of the capital investment occurs at time$=0.$ Interest rate is continuously compounded at a nominal rate of $15\%$ per year. All cash flows are received in one discrete amount at the end of each year. Straight line method is used for depreciation calculations. Choose the best option using: a$)($Marks: $10)$ Incremental ROI as the basis for your analysis. b$)($Marks: $10)$ Incremental NPW as the basis for your analysis.