You find the following estimates of interest rate premiums and rates: Real Risk$-$Free rate $=3\mathrm{.}0\%$; Inflation premium $=3\mathrm{.}5\%$; Default risk premium $=4\mathrm{.}5\%$; Liquidity premium $=1\mathrm{.}5\%$; Maturity risk premium $=2\mathrm{.}5\%.$ Based on this data, the required rate of return on a short$-$term $30-$day corporate security is $6\mathrm{.}5\%$

$9\mathrm{.}0\%$

$11\mathrm{.}5\%$

$12\mathrm{.}5\%$

$15\mathrm{.}0\%$