If share C has a beta of $1,3$; the risk$-$free rate is $8\%$ and market risk premium is $7\%,$ what would the associated cost of equity be$?$

a$.$

$21\mathrm{.}6\%$

b$.$

$17\mathrm{.}1\%$

c$.$

$24\mathrm{.}2\%$

d$.$

$10\mathrm{.}4\%$