A firm is considering the following projects. Its opportunity cost of capital is 8%. Cash Flows, $ Project Time: 0 1 2 3 4 A -6,600 +1,400 +1,400 +3,800 0 B -2,600 0 +2,600 +2,800 +3,800 C -6,600 +1,400 +1,400 +3,800 +6,600 a-1. What is the payback period on each project? (Do not round intermediate calculations. Round your answers to the nearest whole number.) a-2. What is the discounted payback period on each project? (Do not round intermediate calculations. Round your answers to 2 decimal places. If any of the projects does not pay back on a discounted basis, enter zero ("0").) b. Given that you wish to use the payback rule with a cutoff period of 2 years, which