If the average annual rate of return for common stocks is $11\mathrm{.}7\%,$ and treasury bills is $4\mathrm{.}1\%,$ what is the average market risk premium?

Group of answer choices

$7\mathrm{.}6\%$

$4\mathrm{.}1\%$

$15\mathrm{.}8\%$

$11\mathrm{.}7\%$