Consider the following projects: Assume that the projects are mutually exclusive and that the opportunity cost of capital is 12% a. Calculate the profitability index for each project. (Do not round intermediate calculations. Round your answers to 2 decimal places.) b-1. Calculate the profitability-index using the incremental cash flows. (Do not round intermediate calculations, Round your answer to 2 decimal ploces.) b-2. Which project should you choose? Project D Project E