You decide to invest $50,000$ in a risky and risk$-$free combined portfolio. The risky asset with an expected rate of return of $11\%$ and standard deviation of $21\%.$ The risk$-$free T$-$bill with a rate of return of $4\mathrm{.}5\%.$ Assume you are average risk aversion $($coefficient $A=3).$ The optimal complete portfolio should invest

in risky asset.

$5000$

$24550$

$25450$

$45000$