A Firm Has Determined Its Optimal Capital Structure Which Is

A firm has determined its optimal capital structure which is composed of the following sources and target market value proportions.
$$\begin{array} { l c } \text { Source of capital } & \begin{array} { c } \text { Target market } \\\text { proportions }\end{array} \\\hline \text { Long-term debt } & 20 \% \\\text { Preferred stock } & 10 \\\text { Common stock equity } & 70\end{array}$$
DEBT: The firm can sell a 12-year, $1,000 par value, 7 percent bond for $960. A flotation cost of 2 percent of the face value would be required in addition to the discount of $40.
PREFERRED STOCK: The firm has determined it can issue preferred stock at $75 per share par value. The stock will pay a
$10 annual dividend. The cost of issuing and selling the stock is $3 per share.
COMMON STOCK: A firm's common stock is currently selling for $18 per share. The dividend expected to be paid at the
end of the coming year is $1.74. Its dividend payments have been growing at a constant rate for the last five years. Five years ago, the dividend was $1.50. It is expected that to sell, a new common stock issue must be underpriced $1 per share in
floatation costs. Additionally, the firm's marginal tax rate is 40 percent.
-The firm's cost of retained earnings is (See Figure 9.1)

A) 13.6 percent.
B) 13.9 percent.
C) 10.2 percent.
D) 12.7 percent.