Problem 5-15 Profitability index Consider the following projects: Project D Cash Flows ($) -10,500 -20,500 C1 21,000 35,875 Assume that the projects are mutually exclusive and that the opportunity cost of capital is 10%. a. Calculate the profitability index for each project. (Do not round intermediate calculations. Round your answers to 2 decimal places.) Project Profitability Index D E b-1. Calculate the profitability-index using the incremental cash flows. (Do not round intermediate calculations. Round your answer to 2 decimal places.) Profitability-index b-2. Which project should you choose? O Project D O Project E