A $$5500,5\mathrm{.}9\%$ bond with semi$-$annual coupons redeemable at par in $10$ years was purchased at $96\mathrm{.}3.$

What is the approximate yield rate?

a$.$

$6\mathrm{.}3882\%$

b$.$

$4\mathrm{.}5643\%$

c$.$

$3\mathrm{.}1941\%$

d$.$

$9\mathrm{.}1287\%$