$"1.$ LEI has the following capital structure, which it considers to be optimal: Debt $25\%$ Preferred stock $15\%$ Common equity $60\%100\%$ LEI$$s expected net income this year is $$34,285\mathrm{.}72,$ its established dividend payout ratio is $30\%,$ its tax rate is $40\%$ and investors expect earnings and dividends to grow at a constant rate of $9\%$ in the future. LEI paid a dividend of $$3\mathrm{.}60$ per share last year, and its stock currently sells at a price of $$54$ per share. LEI can obtain new capital in the following ways: $$ Preferred: New preferred stock with a dividend of $$11$ can be sold to the public at a price of $$95$ per share. $$ Debt: Debt can be sold at an interest rate of $12\%.""$a$)$ Determine the cost of each capital structure component. b$)$ Calculate the Weighted average cost of capital $($WACC$).$ c$)$ LEI has the following investment opportunities that are typical average$-$risk projects for the firm: PROJECT COST AT t$=0$ RATE OF RETURN A $$10,00017\mathrm{.}4\%$ B $20,0$