What is the modified duration for a three$-$year, semi$-$annual pay, $$1,000$ par value, $4\mathrm{.}80\%$ coupon bond that is currently priced to yield $7\mathrm{.}00\%?$

$2\mathrm{.}81$

$5\mathrm{.}65$

$2\mathrm{.}84$

$2\mathrm{.}73$