Information on four investment proposals is given below: Investment Proposal A B C D Investment required $ (159,869) $ (88,668) $ (168,698) $ (918,698) Present value of cash inflows 211,866 119,468 241,668 1,214,569 Net present value $ 61,866 $ 36,468 $ 81,668 $ 364,569 Life of the project 5 years 7 years 6 years 5 years Required: 1. Compute the profitability index for each investment proposal. Note: Round your answers to 2 decimal places. 2. Rank the proposals in terms of preference