Cosmo has a weighted average cost of capital of 7.65%. Estimate Cosmo's cost of equity given the following information: The firm's effective tax rate is 25%, they have an equal mix of debt and equity, the required return on the market portfolio is 9%, Cosmo has a before tax cost of debt of 6%, and the risk-free rate of return is 3%. O 10.80% 11.10% 11.40% O 11.70%