Oxford Company has limited funds available for investment and must ration the funds among four competing projects. Selected information on the four projects follows: The net present values above have been computed using a 10% discount rate. The company wants your assistance in determining which project to accept first, second, and so forth. Required: Compute the project profitability index for each project. In order of preference, rank the four projects in terms of net present value, project profitability index and internal rate of return