The Whenworth Corporation is trying to choose between the following two mutually exclusive design projects: Year Cash Flow (1) Cash Flow (1) o -$79,000 -$37,000 1 30,500 12,500 2 39,000 26,500 3 45,000 20,500 a-1. If the required return is 13 percent, what is the profitability index for each project? (Do not round intermediate calculations and round your answers to 3 decimal places, e.g., 32.161.) a-2. If the company applies the profitability index decision rule, which project should it take? b-1. If the required return is 13 percent, what is the NPV for each project? (Do not round intermediate calculations and round your answers to 2 decimal places, e.g., 32.16.) b-2. If the company applies the net present value decision rule, which project should it take