Costly Corporation is considering using equity financing. Currently, the firm's stock is selling for $45.00 per share. The firm's dividend for next year is expected to be $6.00 with an annual growth rate of 7.0% thereafter indefinitely. If the firm issues new stock, the flotation costs would equal 14.0% of the stock's market value. The firm's marginal tax rate is 40%. What is the firm's cost of external equity? 21.21% 20.33% 21.27% 23.59% 22.50%