Great Lakes Packing has two bond issues outstanding. The first issue has a coupon rate of $3\mathrm{.}58$ percent, a par value of $$2,000$ per bond, matures in $25$ years, has a total face value of $$4\mathrm{.}0$ million, and is quoted at $105$ percent of face value. The second issue has a coupon rate of $6\mathrm{.}26$ percent, a par value of $$1,000$ per bond, matures in $10$ years, has a total face value of $$8$ million, and is quoted at $93$ percent of face value. Both bonds pay interest semiannually. The company's tax rate is $35$ percent. What is the firm's weighted average aftertax cost of debt?

$7\mathrm{.}26\%$

$3\mathrm{.}43\%$

$5\mathrm{.}27\%$

$3\mathrm{.}29\%$

$3\mathrm{.}79\%$

$3\mathrm{.}50\%$