Coleman's director of capital budgeting has identified the following potential projects: Project B and B* are mutually exclusive, whereas the other projects are independent. All of the projects are equally risky. 12) Plot the investment opportunity schedule (IOS) on the same graph that contains your MCC schedule in question (10). What is the firm's marginal cost of capital for capital budgeting purposes? 13) What are the included projects in Coleman's optimal capital budget? Explain your answer fully