Identify at least three different categories of debt instruments, and compare and contrast them in terms of risk as well as potential for return. The overall interest rate of a debt security consists of a number of different components. Identify each of the components, describe each, and explain why they form a part of the overall interest rate profile of the security. Summarize your findings in a two to three page paper. Problem: Capital Structure and the WACC Percent Debt (%) After Tax Debt Cost (%) Cost of equity (%) 0 ----- 14 15 5 18 45 9 22 67 12 25 78 16 30 Determine the WACC for each scenario Determine the optimal mix of debt and equity. Present your findings in a spreadsheet, and provide the rationale for your answers.