A firm is considering the following projects. Its opportunity cost of capital is 12% Cash Flows, $ Project Time: 0 -9,000 5,000 9,000 2 +2,000 +5,000 +2,000 3 +5,000 +4,000 +5,000 4 +2,000 +5,000 +9,000 +2,000 a. What is the payback period on each project? Project A Project B Project C What is the discounted payback period on each project? (Round your answers to 2 decimal places. If years years years any of the projects does not pay back on a discounted basis, enter zero ("O").) Project A Project B Project C years years years