The expected return on the market is $12\mathrm{.}5\%$ with a standard deviation of $25\%.$ The risk$-$free rate

is $5\mathrm{.}5\%.$ What is the expected return on an efficient portfolio with a standard deviation of $30\%?$

$28\mathrm{.}90\%$

$4\mathrm{.}10\%$

$13\mathrm{.}90\%$

$11\mathrm{.}33\%$