Problem 22-12 A firm has the following investment alternatives. Each one lasts a year. B 448 480 400 400 Investment Cash inflow $ 1,392 Cash outflow $ 1,200 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: X %