The yields on $1-$year and $2-$year STRIPS are $4\mathrm{.}75\%$ and $5\mathrm{.}25\%$ respectively. According to the "Expectations Theory" what will the yield on a $1-$year STRIPS be one year from now?

a$.4\mathrm{.}00\%$

b$.4\mathrm{.}25\%$

c$.5\mathrm{.}00\%$

d$.5\mathrm{.}12\%$

e$.5\mathrm{.}75\%$