The management of Cottingham & Butler Corporation is analyzing the following four investment proposals: Investment Proposal A B C D Investment required $ ( 430 , 000) $ ( 50, 000) $ (50, 000) $(1, 820, 000) Present value of cash inflows 631, 600 70, 500 76, 800 2, 429 , 200 Net present value $ 201, 600 $ 20,500 $ 26, 800 $ 609, 200 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. Investment Project Rank Proposal Profitability Index Preference A B C D