Oakleigh Ltd$.$ is contemplating selling off one of its product lines. This product line is projected to yield a free after$-$tax cash flow of $$2\mathrm{.}5$ million annually starting a year from now, with a decrease of $3\%$ per year thereafter. With a cost of equity at $13\%,$ an after$-$tax cost of debt at $6\%,$ a corporate tax rate of $30\%,$ and a debt$-$equity ratio of $1\mathrm{.}5,$ the firm intends to uphold a steady debt$-$equity ratio and assumes the product line carries average risk. To ensure the divestiture is financially advantageous, the after$-$tax amount the firm should receive would be closest to:

rear's

$0$ a$.$

$$23\mathrm{.}32$ million

O b$.$ $$52\mathrm{.}97$ million

$0$ c$.$

$$43\mathrm{.}10$ million

$$21\mathrm{.}19$ million