Hello! I'm having some trouble with this practice problem. Any help is greatly appreciated!

Information on four investment proposals is given below: D Investment required Present value of cash inflows Net present value Life of the project Investment Proposal A B C $(122,000) $(132,000) $(102,000) $(168,000) 170,800 187,440 161,160 252,000 $ 48,800 $ 55,440 $ 59,160 $ 84,000 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. Investment Proposal Project Profitability Index Rank Preference A B D