Curtis invests $$800,000$ in a city of Athens bond that pays $10$ percent interest. Alternatively, Curtis could have invested the $$800,000$ in a bond recently issued by Initech, Incorporated that pays $12\mathrm{.}5$ percent interest with similar risk as the city of Athens bond. Assume that Curtis's marginal tax rate is $24$ percent.

What is Curtis's after$-$tax rate of return on the city of Athens bond?

Multiple Choice

$8\mathrm{.}32$ percent

$9\mathrm{.}84$ percent

$10\mathrm{.}00$ percent

$12\mathrm{.}00$ percent

None of the choices are correct.