Over a certain period, large$-$company stocks had an average return of $13\mathrm{.}04$ percent, the average risk$-$free rate was $2\mathrm{.}67$ percent, and small$-$company stocks averaged $17\mathrm{.}81$ percent. What was the risk premium on small$-$company stocks for this period?

Multiple Choice

$20\mathrm{.}48\%$

$1037\%$

$15\mathrm{.}14\%$

$4\mathrm{.}77\%$

$1211\%$