A firm has the following investment alternatives. Each one lasts a year. The firm's cost of capital is 10 percent. A and B are mutually exclusive, and B and C are mutually exclusive. a. What is the net present value of investment A ? Investment B? Investment C ? Use Appendix B to answer the questions. Use a minus sign to enter negative values, if any. Round your answers to the nearest cent. A: $ B: $ C: $ b. What is the internal rate on investment A ? Investment B ? Investment C ? Round your answers to the nearest whole number. A: % B: % C. % Interest Factors for the Present Value of One Dollar