The costs of the various types of capital for Duchess Corporation to be as follows:

Cost of new common stock, r$\_$n $=14\mathrm{.}0\%$

Cost of retained earnings, r$\_$r $=13\mathrm{.}0\%$

Cost of preferred stock, r$\_$p $=10\mathrm{.}8\%$

Cost of debt, r$\_$d $=4\mathrm{.}4\%$

The firm expects to have a sizable amount of retained earnings.

The company uses the following weights in calculating its weighted average cost of capital:

Long$-$term debt $40\%$

Preferred stock $10$

Common stock equity $50$

Total $100\%$

What is the firm's WACC?