standard deviation of the earnings per share as shown in the following table EPS and optimal debt ratio Wliams Glassware has estimated, at various debt ratios, the expected earnings per share and the s top-right corner of the data table below in order to copy its contents into a spreadsheet) Debt ratioEarnings per share (EPS) Standard deviation of EPS o 0% 20 40 60 80 2 29 3.05 3.54 3 97 3.79 $1.19 1.76 2.83 3.97 5.59 a. Estmate the optimal debr ratio on the basis of the relationship between eamings per share and the debt ratio. You will probably find it helpful to gr b. Graph the relationship a. Estimate the optimal deot ratio on the basis of the relationship between earnings per share and aph the relationship between the coefmicient of variation and the debt rato Label the areas associated with business risk and inancial risk the debt rato Maxinmum EPS appears to be at debt ratio, withper shane earmnings (Select trom the drop-down menus ) b. The coeficient of variation for a debt ratio of 0% is (Round to two decimal places ) The coeficient of vanator, sor a dett ratio of 20% s [.] Round to two decimal places ) The coencent of variation for a debt rase ot 40% is[) (Reurd to two decimal places ) wit