Information on four investment proposals is given below: Investment Proposal D Investment required (130,000) 3 (140,000) $ (150,000) 5 (1,260,000) Present value of cash inflows 15,600 199,00 228,600 1,681,100 Net present value 155,600 $170.600 $421,100 Life of the project 5 years 7 years 6 years 6 years Required: 1. Compute the profitability Index for each investment proposal. (Round your answers to 2 decimal places.) 2. Rank the proposals in terms of preference. Investment Profitability Proposal Index Rank Preference A B C D