What is the cost of equity from retained earnings for a company with a beta of $2\mathrm{.}05,$ given that it is expected to pay a dividend of $$6\mathrm{.}15$ per share next year, and that it is expected to grow its dividend at a constant rate of $7\%$ in future. The company$$s stock is currently priced at $$225.$

$9\mathrm{.}73\%$

$12\mathrm{.}61\%$

$9\mathrm{.}92\%$

$9\mathrm{.}05\%$

$14\mathrm{.}35\%$