Spam Corporation is financed entirely by common stock and has a beta of $1\mathrm{.}0.$ The firm is expected to generate a level, perpetual

stream of earnings and dividends. The stock has a price$-$earnings ratio of $8$ and a cost of equity of $12\mathrm{.}5\%.$ The company's stock is

selling for $$50.$ Now the firm decides to repurchase half of its shares and substitute an equal value of debt. The debt is risk$-$free, with a

$5\%$ interest rate. The company is exempt from corporate income taxes. Assume MM are correct.

a$.$ Calculate the cost of equity after the refinancing.

b$.$ Calculate the overall cost of capital $($WACC$)$ after the refinancing.

Note: Enter your answer as a percent rounded to $1$ decimal place.

c$.$ Calculate the price earnings ratio after the refinancing.

d$.$ Calculate the stock price after the refinancing.

e$.$ Calculate the stock's beta after the refinancing.