The Town of Brockport zero coupon bonds have a market price of $$318\mathrm{.}46,$ a face value of $$1,000,$ and a

yield to maturity of $6\mathrm{.}69$ percent. How many years until these bonds mature?

$17\mathrm{.}67$ years

$32\mathrm{.}28$ years

$24\mathrm{.}01$ years

$20\mathrm{.}68$