What should be the time to maturity, in years, of the bond that has $5\mathrm{.}0\%$ of coupon rate, makes the payment semiannually, and has the vield to maturity of $10\%$ if it sells for $$875?$

$7\mathrm{.}92$

$8\mathrm{.}74$

$295$

$6\mathrm{.}97$

$3\mathrm{.}09$