Which of the following statements is most correct? Select one: O a. the cost of debt has to be adjusted for taxes because interest expense reduces tax expense ob. the cost of debt has to be adjusted for taxes because tax expense reduces actual interest expense O c. the cost of preferred stock has to be adjusted for taxes because preferred dividends reduce tax expense Od the cost of preferred stock has to be adjusted for taxes because tax expense reduces preferred dividends e, the cost of newly issued common stock has to be adjusted for taxes because dividends reduce tax expense Glven the following past returns for a stock: 2013 + 15% 2014 + 18 2015 + 30 2016 20 2017 + 10 Together, this stock's expected return and stand alone risk measure mean: Select one: O a. there is a roughly 70% chance the actual return will be between - 8.0296 and +29.22% O b. there is a roughly 70% chance the actual return will be between + 8.02% and + 29.22% O c. there is a roughly 70% chance the actual return will be between - 3.4196 and + 29.91% O d. there is a roughly 70% chance the actual return will be between + 3.419 and +29.9196 O e. there is a roughly 70% chance the actual return will be between - 8.62% and + 28.62%