WACC and optimal capital budget

$***$ PLEASE ANSWER ACCORDING TO EVERYTHING THAT NEEDS TO BE ANSWERED$/$ CORRECTED ON THE PICTURE TO GET A POSITIVE FEEDBACK $***$Adamson Corporation is considering four average$-$risk projects with the following costs and rates of return:

The company estimates that it can issue debt at a rate of $r_d=10\%,$ and its tax rate is $35\%.$ It can issue preferred stock that pays a constant dividend of $$4$ per year at

$$58$ per share. Also, its common stock currently sells for $$40$ per share; the next expected dividend, $D_1,$ is $$4\mathrm{.}25$; and the dividend is expected to grow at a constant

rate of $6\%$ per year. The target capital structure consists of $75\%$ common stock, $15\%$ debt, and $10\%$ preferred stock. The data has been collected in the Microsoft Excel

Online file below. Open the spreadsheet and perform the required analysis to answer the questions below.

a$.$ What is the cost of each of the capital components? Round your answers to two decimal places. Do not round your intermediate calculations.

Cost of preferred stock $\%$

Cost of retained earnings $\%$

b$.$ What is Adamson's WACC? Round your answer to two decimal places. Do not round your intermediate calculations.

$\%$

c$.$ Only projects with expected returns that exceed WACC will be accepted. Which projects should Adamson accept?

Project $1$

Project $2$

Project $3$

Project $4$