According to Bloomberg, Ivan Chemicals has a beta of $1\mathrm{.}15.$ If the risk free rate is $7\mathrm{.}9$ percent and the market risk premium $($market return minus the risk free rate rate$)$ is estimated to be $8\mathrm{.}3$ percent, what is the company's cost of equity capital using the CAPM method?

$18\mathrm{.}36\%$

$17\mathrm{.}45\%$

$12\mathrm{.}55\%$

$16\mathrm{.}2\%$