A semiannual pay, noncallable, $$1,000$ par value, $4\mathrm{.}375\%$ coupon, $9$year bond is currently priced at $105$ as a percent of par. What is the bond's yield to maturity?

$1\mathrm{.}86\%$

$3\mathrm{.}72\%$

$2\mathrm{.}47\%$

$4\mathrm{.}93\%$