Information on four investment proposals is given below: Investment Proposal A B C Investment required Present value of cash inflows Net present value $ (90,000) 126,000 $ 36,000 $ (100,000) 138,000 $ (70,000) 105,000 $ 38,000 $ 35,000 Life of the project 5 years 7 years 6 years Required: D $ (120,000) 160,000 $ 40,000 6 years 1. Compute the profitability index for each investment proposal. (Round your answers to 2 decimal places.) 2. Rank the proposals in terms of preference.