Please provide your answer through calculations to the problem, by presenting the formulas you use, the calculations, the result and its interpretation. Calculate for each possible and optimum combination the weighted average profitability index and then mention which is the best combination choice from the following Projects, if the total available investment is $2000: A B C D E NPV $ 500 100 Investment 300 1,000 $ 400 700 300 800 $ 200 $ 900 $ $