Curtis invests $$550,000$ in a city of Athens bond that pays $7\mathrm{.}75$ percent interest. Alternatively, Curtis could have invested the $$550,000$ in a bond recently issued by Initech, Incorporated that pays $10$ 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

$6\mathrm{.}07$ percent

$7\mathrm{.}59$ percent

$7\mathrm{.}75$ percent

$9\mathrm{.}75$ percent