Consider a three$-$year bond. The annual inflation for the coming years will be $4\%-$ the maturity risk premium increases by $0\mathrm{.}15\%$ each year until the bond's maturity. The default risk premium for financially sound businesses increases by $0\mathrm{.}2\%$ yearly until the bond's maturity. The default risk premium is

$0\mathrm{.}6\%$

$0\mathrm{.}45\%$

$1\mathrm{.}3\%$

$0\mathrm{.}15\%$

$4\%$