United Company has debt with both a face and a market value of $$2,400,000.$ This debt has a coupon rate of $6$ percent and pays interest annually. The expected earnings before interest and taxes are $$745,000,$ the tax rate is $25$ percent, and the unlevered cost of capital is $8\mathrm{.}8$ percent. What is the firm's cost of equity?

A$.9\mathrm{.}91\%$

B $10\mathrm{.}21\%$

C $10\mathrm{.}51\%$

D $10\mathrm{.}81\%$

E $11\mathrm{.}11\%$