Recall that on a one$-$year Treasury security the yield is $4\mathrm{.}0000\%$ and $5\mathrm{.}4000\%$ on a two$-$year Treasury security. Suppose the one$-$year security does

not have a maturity risk premium, but the two$-$year security does and it is $0\mathrm{.}15\%.$ What is the market's estimate of the one$-$year Treasury rate one

year from now? $($Note: Do not round your intermediate calculations.$)$

$6\mathrm{.}515\%$

$8\mathrm{.}274\%$

$5\mathrm{.}5378\%$

$7\mathrm{.}4271\%$