Preference Ranking Information on four investment proposals is given below: Investment Proposal B D A Investment required $(85,000) $(200,000) $(90,000) $(170,000) Present value of cash flows 119,000 250,000 135,000 221,000 Net present value $34,000 $50,000 $45,000 $51,000 Life of the project 5 years 7 years 6 years 6 years Required: 1. Compute the project profitability index for each investment proposal. 2. Rank the proposals in terms of preference