A firm has an ROA of $14\%,$ a debt$/$equity ratio of $1\mathrm{.}0,$ a tax rate of $0\%,$ and an interest rate on debt of $9\%.$ The firm's ROE is $\_$a$.19\%$

O b$.-4\%$

$0$ c$.28\%$

$$ d$\mathrm{.}8\%$

$$ e$.$ none of the above