A stock has a beta of $0\mathrm{.}7$ and an expected return of $9$ percent. The risk$-$free rate is $4$ percent. What is the slope of the security market line?

Group of answer choices

$8\mathrm{.}57$ percent

$6\mathrm{.}30$ percent

$5\mathrm{.}00$ percent

$7\mathrm{.}14$ percent

The slope of the security market line cannot be calculated with the information provided.