The Woodland Park Bank has purchased a bank$-$qualified municipal bond with a yield of $6\mathrm{.}0\%.$ This bank had to borrow funds to make this purchase at a cost of $4\mathrm{.}0\%.$ Let $80\%$ of the interest cost of funding this bond purchase be tax deductible. This bank is in the $25\%$ tax bracket. What is the net after$-$tax return on this bank$-$qualified municipal bond?

A$.$

$2\mathrm{.}6\%$

B$.$

$2\mathrm{.}7\%$

C$.$

$2\mathrm{.}8\%$

D$.$

$5\mathrm{.}0\%$

E$.$

$2\mathrm{.}2\%$