Problem 22-17 A firm has the following investment alternatives. Each costs $15,000 and has the following cash inflows. a. Based on the cost of capital, should any of the investments be made? Use a minus sign to enter negative values, if any. Round your answers to the nearest dollar. NPV(Investment A): $ NPV(Investment B): $ NPV(Investment C): $ should be made. NPV(Investment A): $ NPV(Investment B): $ NPV(Investment C): $ should be made. c. Would the answers to a and b be different if the three investments were mutually exclusive? If the investments were mutually exclusive in part a should be made. If the investments were mutually exclusive in part b should be made