Which of the following investments has the highest or greater required return? U.S. Treasury Bood IBM Corporate Bond IBM Common Stock d IBM Preferred Stock Which of the following is an example of unsystematic risk? Intel employees announce system-wide strike. The Fed raises interest rates unexpectedly. The rate of inflation is higher than expected None of the above. The additional return offered by a more risky investment relative to a safer one a called the risk premium. the risk return the risk-free rate. the insurance premium. What is the purpose of diversification? Increase the risk of your portfolio. Lower the overall risk of your portfolio. Maximize possible returns. None of the above Everything else being equal a lower corporate tax rate will increase the WACC of a firm with debt and equity in its capital structure will not affect the WACC of a firm with debt in its capital structure will decrease the WACC of a firm with some debt in the capital st