What is the expected return and standard deviation of a portfolio consisting of $$9600$ invested in a risk$-$free asset with an $8\mathrm{.}7-$percent

rate of return, and $$3200$ invested in a risky security with a $20\mathrm{.}7-$percent rate of return and a $25\mathrm{.}7-$percent standard deviation?

$19\mathrm{.}275$ percent, $17\mathrm{.}70$ percent

$17\mathrm{.}70$ percent, $19\mathrm{.}275$ percent

$11\mathrm{.}70$ percent, $6\mathrm{.}425$ percent

$6\mathrm{.}425$ percent, $11\mathrm{.}70$ percent