$1$ pts

A corporation's $10-$year bonds yield $5\mathrm{.}50\%,$ and T$-$bonds with the same maturity yield $3\mathrm{.}80\%.$ The corporation bonds have a default risk premium of $0\mathrm{.}90\%,$ and liquidity premium of $0\mathrm{.}80\%.$ The inflation premium is $0\mathrm{.}50\%,$ and the maturity risk premium on $10-$year bonds is $0\mathrm{.}60\%.$ What is the real risk$-$free rate?

$2\mathrm{.}70\%$

$2\mathrm{.}78\%$

$2\mathrm{.}92\%$

$2\mathrm{.}59\%$

$2\mathrm{.}48\%$