The WSJ reports that the rates on $2-$ and $3-$year Treasuries are $4\mathrm{.}47\%$ and $4\mathrm{.}44\%,$ respectively. Based on the expectations theory, what do investors expect the $1-$year Treasury rate to be in $3$ years?

A$.$

$4\mathrm{.}455\%$

B$.$

$4\mathrm{.}51\%$

C$.$

$4\mathrm{.}41\%$

D$.$

$4\mathrm{.}38\%$