If a $7-$year $3\%$ coupon bond maturing at $$1,000$ is selling for $$939\mathrm{.}47,$ what is the yield to maturity?

A$)$

$4\mathrm{.}5\%$

B$)$

$4\mathrm{.}0\%$

C$)$

$5\mathrm{.}1\%$

D$)$

$5\mathrm{.}3\%$