A company has the following data:

rRF $=5\mathrm{.}0000\%$;

RM $=11\mathrm{.}0000\%$;

b $=1\mathrm{.}15$

What is the firm's cost of common from reinvested earnings based on the CAPM?

$14\mathrm{.}2500\%$

$11\mathrm{.}7500\%$

$12\mathrm{.}3000\%$

$11\mathrm{.}9000\%$

$12\mathrm{.}4000\%$