LG $5$ P$9-11$ Retained earnings versus new common stock Using the data for each firm shown in the following table, calculate the cost of retained earnings and the cost of new common stock using the constant$-$growth valuation model.

$\backslash$table$[[$Firm$,\backslash$table$[[$Current market$],[$price per share$]],\backslash$table$[[$Dividend$],[$growth rate$]],\backslash$table$[[$Projected$],[$dividend per$],[$share next year$]],\backslash$table$[[$Underpricing$],[$per share$]],\backslash$table$[[$Flotation cost$],[$per share$]]],[$A$,$$$50\mathrm{.}00,8\%,$$$2\mathrm{.}25,$$$2\mathrm{.}00,$$$1\mathrm{.}00$