TeleNyckel, Inc. has a beta of 1.4 and is trying to calculate its cost of equity capital. If the risk-free rate of return is 5 percent and the market risk premium is 8 percent, then what is the firm's after-tax cost of equity capital if the firm's marginal tax rate is 30 percent? 13.20% 14.20% 15.20% 16.20%