The outstanding debt of Berstin Corp. has eight years to maturity, a current yield

of $9\%,$ and a price of $$90.$ What is the pretax cost of debt if the tax rate is $25\%?$

A$.5\mathrm{.}9\%$

B$.6\mathrm{.}9\%$

C$.9\mathrm{.}8\%$

D$.$ more information needed