It is estimated that inflation will average $7\mathrm{.}00\%$ per year for the next $4$ years, and average $4\mathrm{.}90\%$ each year thereafter. For a real risk$-$free rate of $2\mathrm{.}80\%,$ what is the default risk premium of a $17-$year corporate bond with a yield of $13\mathrm{.}60\%?$

Assume that the liquidity premium is $3\mathrm{.}00\%,$ but there is no maturity risk premium.

$2\mathrm{.}55\%$

$2\mathrm{.}24\%$

$2\mathrm{.}17\%$

$2\mathrm{.}41\%$

$2\mathrm{.}48\%$