Your firm has common stock with a market price of $$72$ per share and an expected dividend of $$2\mathrm{.}81$ per share at the end of the coming year. The dividends paid on the outstanding stock over the past five years are as shown in table below. The cost of the firm's common stock equity is approximately $\_\_\_\_\_.$

Year Dividend

$1$ $$2\mathrm{.}00$

$22\mathrm{.}14$

$32\mathrm{.}29$

$42\mathrm{.}45$

$52\mathrm{.}62$

A$)10\mathrm{.}9$ percent

B$)5\mathrm{.}15$ percent

C$)12\mathrm{.}1$ percent

D$)15\mathrm{.}4$ percent