Your portfolio has a beta of $1\mathrm{.}69.$ The portfolio consists of $17$ percent U$.$S$.$ Treasury bills, $23$ percent Stock A$,$ and $60$ percent Stock B$.$ Stock A has a risk level equivalent to that of the overall market. What is the beta of Stock B$?$

Multiple Choice

$41$

$88$

$2\mathrm{.}43$

$7\mathrm{.}35$

$2\mathrm{.}47$