Information on four investment proposals is given below: Investment Proposal A B C D Investment required $ (120,000 ) $ (50,000 ) $ (50,000 ) $ (360,000 ) Present value of cash inflows 169,200 67,300 79,000 476,000 Net present value $ 49,200 $ 17,300 $ 29,000 $ 116,000 Life of the project 5 years 7 years 6 years 6 years Required: 1. Compute the project profitability index for each investment proposal. (Round your answers to 2 decimal places.) 2. Rank the proposals in terms of preference.