Kop Corporation's $5-$year bonds yield $6\mathrm{.}50\%,$ and T$-$bonds with the same maturity yield $4\mathrm{.}00\%.$ The default risk premium for Kop's bonds is DRP $=0\mathrm{.}40\%,$ the liquidity premium on Kop's bonds is LP $=2\mathrm{.}10\%$ versus zero on T$-$bonds, the inflation premium $($IP$)$ is $1\mathrm{.}50\%,$ and the maturity risk premium $($MRP$)$ on $5-$year bonds is $0\mathrm{.}40\%.$ What is the real risk$-$free rate, r$*?$

Group of answer choices

$2\mathrm{.}23\%$

$2\mathrm{.}25\%$

$2\mathrm{.}10\%$

$2\mathrm{.}18\%$

$2\mathrm{.}58\%$