Your porttolio consists of $$58,792$ invested in a stock that has a beta $=1\mathrm{.}7,$ $$71,686$ invested in a stock that has a beta $=1\mathrm{.}7,$ and $$92,104$ invested in a stock that has a beta $=1\mathrm{.}5.$ The risk$-$free rate is $4\mathrm{.}7\%.$ Last year this portfolio had a required return of $7\mathrm{.}4\%.$ This year nothing has changed except that the market risk premium has increased by $2\%.$ What is the portfolio's current required rate of return?

$7\mathrm{.}63\%$

$8\mathrm{.}63\%$

$11\mathrm{.}63\%$

$9\mathrm{.}63\%$

$10\mathrm{.}63\%$