The Rhaegel Corporation's common stock has a beta of $1\mathrm{.}5.$ If the risk$-$free rate is $4\mathrm{.}5$ percent and the expected return on the market is $10$ percent, what is the company's cost of equity capital?

Multiple Choice

$1211\%$

$13\mathrm{.}39\%$

$13\mathrm{.}26\%$

$1275\%$

$19\mathrm{.}5\%$