$5$ Multiple Choice $1\mathrm{.}33$ points

In order for you to be indifferent between the after$-$tax returns on a corporate bond paying $8\mathrm{.}5\%$ and a tax$-$exempt municipal bond paying $6\mathrm{.}12\%,$ what would your tax bracket need to be$?$

$28\%$

$15\%$

Cannot be determined from the information given.

$72\%$

$33\%$