Rivoli Inc. hired you as a consultant to help estimate its cost of capital. You have been provided with the following data: $D_0=$$$0\mathrm{.}80$;$P_0=$$$57\mathrm{.}50$; and $g=8\mathrm{.}00\%($constant$).$ Based on the DCF approach, what is the cost of equity from retained earnings? Do not round your intermediate calculations.

$11\mathrm{.}02\%$

$10\mathrm{.}17\%$

$9\mathrm{.}50\%$

$10\mathrm{.}07\%$

$7\mathrm{.}98\%$