Dynamics Robotics Corporation (DRC) is considering two new machines that should produce considerable cost savings in its assembly operations. The cost of each machine is RM14,000 and neither is expected to have a salvage value at the end of a 4-year useful life. DRC's required rate of return is 12% and the company prefers that a project return its initial outlay within the first half of the project's life. The annual after-tax cash savings for each machine are provided below: a) What is the payback period for each machine? b) What is the net present value (NPV) for each machine? c) Explain which machine should be purchased